You pace around for a few moments and think. So far you've managed to make it on foot, but walking the entire journey would be more than you can take...you're gonna need something to travel on. Then a thought hits you: your newly transformed maid could easily serve as a powerful steed! You order her to follow you outside, and within moments all of you stand in front of the building. "Serika", you say as you turn to her, "take off your clothes. We wouldn't want them to be torn in what I'm about to do." She nods and says "yes my mistress" and quickly pulls her dress and underwear off, once again showing her almost perfect, nymph-like body to the world.
Once again, you prepare a spell and even while you are chanting the words, you can see muscles and fat bulging under her skin, making her thighs extremely thick just like her front, on which breasts are no longer to be seen. Bright white hairs start coming from her skin, spreading out into a thin layer of rough horse hair while the hair on her head rearranges itself into a mane. She tries not to flinch while her toes and fingers turn black, curling and melting into shiny black hooves, attached to disappearing hands. She falls to her knees and lands on her hooves, desperately trying to rebalance herself. Soon her arms become thinner and longer, the same length as her legs which almost allows her to stand up straight thanks to an odd twist in her long neck that elevates her head about two feet from her shoulders. Her nose seems to stretch upwards, and her growing teeth push the rest of her face up until the only thing remaining of her nose are two giant nostrils that puff deep, warm breaths. Her face has grown quite a bit by now, square jaws outlining a long horse muzzle with bulging eyes on the side. Slowly regaining herself, Serika twitches her new pointy ears a few times and turns her head towards her giant rear as she feels the final change coming up: a wave runs through her spine down to her giant butt and then extends itself outwards like a thin rope of flesh, making Serika whinny in pain. Long blond hairs sprout forth from the flesh and within seconds Serika has the silkiest, richest tail that has ever graced a horse. Still unsure about these new feelings, Serika flicks her tail a few times and watches in amazement as it swings back and forth.
You laugh and say "come on Serika, let's get you ready for riding...you'll have time to play with that later." As soon as a pair of hoof irons is nailed on and Serika is saddled and leashed, you gently ascend her and give the maid a hand getting on, and with a whip of the ropes Serika sets off in a gallop to your next destination...