The amount of customization still available was impressive - but it was something Alex didn't feel entirely comfortable working out with the doctor around. It might have seemed bizarre, given that al-Zawahi had just watched her make her wife climax... but physical intimacy had never been something the heiress felt shy about. Emotional intimacy was another matter. "Could we please have a bit of privacy, while we get everything picked out?"
al-Zawahi nodded as she headed for the door. "Of course. We'll be monitoring the status of your implants just to be safe, but nothing you say or feel will be broadcasted. Just give us a buzz when you're ready." She quickly headed out, closing and locking the door to offer the couple some privacy. Almost immediately, Alex was pulling off Susie's gown followed by her own, before carefully climbing up to lay naked with her beloved right in the hospital bed.
"So...." Alex paused to plant a kiss on her wife's cheek. "What's your preference? Keep things fairly normal or spiece it up a bit?"
Susie smiled back as she slipped an arm around Alex's midsection. "Whatever you'd like best - I'm gonna be your plaything, after all."
"I know you are, it's just..." She trailed off for a second, biting her lip as she contemplated exactly how to express what was on your mind. "I love that you're going along with all the crazy extra stuff I wanted. It's fantastic, and thinking about having you as this pure sex object... it drives me crazy. But..." A sigh passed her lips as she brushed Susie's hair. "I.. I don't want you doing this, and being like this forever, just because you think it'll make me happy. I want you to be happy, too."
Moments like this, the girl who had so often been dimissed as a shallow, spoiled heiress made Susie's heart melt. "Alex, I promise - I wouldn't even be considering it if I didn't know it'd make me happy." She twisted around to hold her wife in her arms, while she still had functional arms and not just an extra pair of legs. "You know why I'm always rushing to be submissive for you? Why you've always been able to drag me down and use me however you please?" She smiled sweetly. "Because I trust you. I love you, and I know you love me, and that you'd never do anything to hurt me. I can't imagine anything happier than giving myself over, completely and utterly, to somebody who cares about me as much as you do."
For a long, long moment, Alex just lay there, faintly smiling and staring into her wife's eyes, before she finally had to shut them in order to hold back the tears. "Just melt my heart right down to ash, why don't you?" she joked quietly, before opening her eyes and kissing Susie. "Okay... okay. But I still want you to pick what you like for colors."
Susie already had an answer in mind. "Gold. Ostentatious gold. With a metallic texture, too, if they can pull that off." She imagined it as being possible - surely someone else had wanted to integrate precious metals into their alterations before. "Same for the hair, and the eyes, and even the tip. When somebody looks at me, I want them to be enraged with jealousy at how gorgeous I am, at how incredible of a body you're getting all to yourself."
"Ohhhh, that is gonna drive some people I hate insane. Love it." Her hand trailed down to Susie's stomach. "I think for the production... horse for your output, human for mine." Susie nodded - it seemed like the best balance. Alex would produce delicious meals for her new dorse, and Susie's own cream could provide a nice bit of extra income - or an alternate treat when either of them fancied. "And... how do you feel about lactation?"
"How do you feel about sucking milk out of two earth-shatteringly huge titties?"
Alex smirked. "I feel like you better be ramming that giant horse cock into me while you're doing it."
"Only if yours is getting in between my tits in the meantime."
"Fine, but you better be sucking the end dry when I do, or trying your damnedest."
"You couldn't stop me if you wanted to."
"Good. We have a deal then." She giggled as her hand moved over to grasp Susie's. "Now c'mon... let's put those magic fingers through their paces while you've still got them."
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Once they finally called the doctor back in and explained their selections, the schedule for the remaining work was laid out. Given how much Alex was paying to expedite things, the procedures would be conducted in just a few days, the soonest that they could have everything ready and verified as safe for impelemtation. Alex and Susie would get their operations simeltaneously; with the comparatively lighter alterations the former was receiving, she could finish and recover fully by the time her wife was done, allowing them to immediately start working out the intricacies of their new bodies.
Naturally, the last few days leading up to this event were dedicated to cramming in all the things that their altered anatomies would soon make impossible. Which, really, meant little more than about four days of on again off again copulation, driving each other to exhaustion, resting, and then repeating it all over again. It had started to occur to Susie in this period that, once the operation had been conducted, this sort of existence would define the entire rest of her life, which itself would be extended greatly by the alterations. That sounded about as close as one could get to heaven while still on Earth.
When the day finally came, and the couple had shared their last goodbye kiss as baseline humans, it was all Susie could do to not get soaking wet as she was brought into the sterile white chamber where everything would be conducted. A not at all uncommon reaction, according to al-Zawahi. There was even a drain set up specifically for such releases as she was strapped into a harness that would keep her secure for the first part of the process. After this, her feet were locked into straps that were bolted into the floor, and she was gently lowered to be on all fours, her wrists promptly secured inside similiar straps.
"The process can involve a significant amount of reflexive movement and thrashing, so we're making sure that you're secure," the doctor explained, still confidently smiling as she entered commands into a computer terminal. With a whirring sound the ceiling harness pulled her up slightly, just enough to get her feet and hands clear of the ground. "We'll start with the hooves, along with some modifications to your muscular and skeletal structures to better handle your new weight distribution, then move from there, one new feature at a time. Are you ready to begin?"
Susie nodded, and from the ceiling dropped a robotic arm, a large syringe with a golden fluid visible inside. "Administering first retroviral injection." Susie briefly grimaced as the large needle entered her back, but the pain of the penetration soon subsided as she felt the warm concoction within begin to spread through her body, surging through her veins and rushing into her arms and legs. Within moments, she was moaning at the feeling of a burn like the best workout of her life, the muscles becoming denser and more powerful, better able to hold up all the mass she would be acquiring. By the end of it, she knew she'd have the same relative ratio of strength to personal mass - but until then, she could bask in feeling like a bit of a superhero.
The feeling soon spread to her hands and feet, where something far more radical occurred. Toes and fingers began to curl up, the flesh slowly losing its dexterity as skin began to grow over the individual digits. She moaned in ecstacy as she realized her hands and feet were becoming nothing more than blobs - and then, after a few moments, the blobs began to grow. What had been the ends of her extremeties began to thicken and harden with new growth, the heavy, rigid, durable material of horse hooves quickly taking shape. She panicked as a reflexive effort to wriggle her fingers was met with nothing but a shake of the new hoof at the end of her right arm, and the panic further set her groin ablaze.
Slowly the harness lowered, putting her back onto the ground, and she found herself feeling surprisingly stable - the four hooves that now sat where feet and hands used to be were an excellent platform, easily bearing her weight in combination with the extra new muscle and restructured bones in each limb. The reason for the straps became apparent as she tried to jump like an excited mare; she was unable to, but the desire to kick and buck and run free was an instantly powerful one. The doctors and technicians surrounding her had to wait a minute for her to calm down before anything could continue.
"First injection successful. Administering second injection." Another arm lowering, another needle into her back. This time, the burning rush spread right up her back and into her neck; she had to fight not to scream in ecstacy as she could feel the whole thing being stretched and thickened, reshaping at the same time to allow her head to be oriented forward without constant neck pain. Her gaze was at a greater height now, but one still easily allowing her to reach the crotch of an average-height human being in order to carry out what would soon be her greatest purpose. And to further aid that, her face and head, too, began to stretch as well, bones crunching and muscles tearing and resealing as her mouth and nose were brought out into something halfway to a snout.
She stuck her tongue out to lick her lips, and stuck around to feel them swelling up, becoming plump, luscious, the most kissable lips imaginable, and perfect for holding onto a shaft - one of considerable length, thanks to all the extra length added to her own throat and neck. A certain lustful gaze came over her as she looked over at al-Zawahi - and as if on cue, a technician brought forth a long didlo in the shape of a horse's member, thrusting it right into her mouth. She moaned with glee, eagerly sucking as she heard mentions of a third injection now occurring. This was the biggest needle yet, a dose with two significant effects that needed to begin at the same time in order to allow her to retain her balance.
Moans came faster and louder as she felt her breasts, already considerable in size, begin to rapidly inflate. This wasn't the sort of inflation that implants provided - this was real growth, the flesh of her rack exponentially expanding. All that new strength in her arms - now her front legs? - had to be put to use in supporting herself as her increasingly gigantic tits dangled further and further. They only stopped growing after exceeding the size of beach balls, so large she could actually rest on the firm flesh as dribbles of white fluid leaked out onto the floor around them.
Speaking of balls. Just above a positively soaking-wet pussy, she felt two bulges rapidly form, these ones quickly growing just as quickly as her chest had and reaching the same size before they were done swelling. But instead of smooth sacks of milky joy, these were large, solid, hair collections of salty nectar. She'd never even imagined having balls, but as soon as they were dangling below, she was desperate for someone to touch them, play with them, fondle her massive testacles. And soon joining them came a third bulge, this one quickly growing out in a long cynlindrical shape rather than spherical. It was rigid almost immediately upon reaching its full length of three feet, sticking itself between her gigantic udders as she screamed, needing more than anything to let out a surge of equine fluids through the tip - but with her mental link already implemented, it was impossible.
She was lost in a sea of blissful constriction as the fourth injection stabbed into her rear end. The swelling out of her buttocks was positively tame compared to the development of her giant rod - not that she could stop screaming as the tail plug was inserted. She felt like she would die without servicing, but one final injection was needed. The lightest of the changes - finishing touches. Her previously-short hair shifted to a golden blonde color, before rapidly growing out, falling in luxurious tresses down to the floor. The thick mane, along with her lips, eyes, nipples, and the tip of her throbbing horsecock quickly began to alter in texture, becoming metallic, rough, like gold - and dark gold was the color they took on, a final display of ostentatious wealth and privlege to round out the newly-minted dorse.
By this point, the fully-transformed Susie was utterly delirious with lust and a fire that needed to be quenched. She hardly resisted as the techs freed her from her restraints, not comprehending anything the doctor said as she led the stallion slowly away, tits and balls dragging along the floor. She couldn't understand al-Zawahi's words - but she knew she was being led to Alex. All she could think about as they guided her into another operating room was her lover, her master, the soulmate whose service and pleasure was now her whole reason for existing. Thoughts of her beloved using a brand new rod to ravage her filled her mind as the door open, and her lustful gaze fell upon her wife...