After a moment of thought, Selena decided she was fine with stealing Diana's wolf essence. Luna was a snob, sure, but she largely stayed out of Selena's way. Diana was different. Diana was only a year older than Selena and couldn't resist competing with her little sister... hard. Selena decided that she just couldn't forgive the years of being beaten up by Diana just because the bitch could. She couldn't forgive the swaggering jock stealing every girlfriend Selena'd ever had with a flex of her perfect muscles. And she REALLY couldn't forgive Diana always rubbing her shifts in the untransformed girl's face.
"That's actually a really great idea, Tats," Selena said at last. "Diana especially really has it fucking coming. I'm in!" she handed Morgana twenty dollars. "Here you go. Now please, please teach me the spell!" She was practically bouncing up and down with excitement.
Morgana smiled at her client. "My, my! So much like an eager puppy! I can practically see your tail wagging now. Don't worry, you'll soon have it for real. The incantation goes as follows: 'Wolf thou art, but wolf no longer! Thy wolf is mine, to make me stronger!' You must clasp hands with the victim, or the incantation is useless. It will take about a month to gain full use of your wolfgirl form."
"Aw, crap!" Selena moaned. "The full moon's tonight! I won't wolf out?"
Morgana shrugged. "Not really. If you did the spell today, you'd get a bit hairier tonight, and your fingernails, toenails, and canine teeth might sharpen a bit. That's it. It'll slowly get more drastic over the next month. Meanwhile, Diana will transform a bit less dramatically every night until in a month's time she finds she can't shift from her human form at all."
Selena hung her head in frustration. "Damn it."
Tatiana put a comforting arm around Selena's shoulders. "Sucks."
Morgana pondered a bit. "Well... there is a way to speed the transformation up. I... hadn't wanted to mention it, on account of Diana being your sister."
Selena's head snapped up. "What is it?!"
"Well," Morgana went on, "before you perform the chant, you... have sex with the target."
"What?!" Selena choked.
"It's the exchange of psychic energies during lovemaking, you see," Morgana explained. "That's how succubi and incubi feed, you know. That blast of energy from Diana's soul should instantly transfer all of her wolf essence to you. I completely understand if you don't want to do this with your sister, of course."
"Damn..." Selena sighed in shock. "Sex with... my sister... I dunno if I can take it that far."
"I don't really get the big deal," said Tatiana. "Vampires date their my family all the time. My sisters Liesel and Claudia are girlfriends."
Selena rolled her eyes. "That isn't the same thing, Tats. You vampires join your clan by being turned. Carmilla and Mircalla didn't give birth to Liesel and Claudia; they came from different human mothers. That's not they way werewolf packs work. Your sister is your SISTER! It's just... gross! Besides, I freaking hate Diana. I wouldn't wanna have sex with her even if she weren't my sister."
Tatiana smirked. "That's what you say, but I've seen you checking out that firm, toned ass of hers."
Selena rolled her eyes again. "Sure, Tatiana. Believe whatever you want. Well, I'd better go and at least perform the normal version of the spell."
Tatiana gave Selena a thumbs up and a bright, fanged grin. "Awesome, Lena! See ya tomorrow in class!"
"It's a date," said Selena. "Bye, Tats! And thanks, Morgana!"
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Selena pedaled her bike into the grounds of the converted ranch where her pack lived. Many of the younger pack members were out playing in the field, some in their human form and some in the bipedal wolf-human hybrid form that was the birthright of all true werewolves. A werewolf had to assume that form every full moon, but could otherwise summon and discard it at will. It put a smile on Selena's face to know she'd have such a shape of her own soon.
Selena slipped into the ranch-house where the pack's alpha-family, her own, lived. She stepped into Diana's room and scanned it for her sister's presence. Nothing. Oh well.
Suddenly, a blurry mass of fur and muscle sprang down from the rafters and pounced on Selena, pinning her to the floor. Once her head stopped smarting and the room quit spinning, Selena found herself staring at Diana Lyall's grinning, lupine face.
"Ha!" Diana whooped. "Gotcha, dork! Where ya been all day? Hanging out with that dead bitch?"
Selena bristled (alas, figuratively). "Her name is Tatiana von Karnstein, Diana, and she's a vampire."
Diana shrugged as she crawled off of Selena. "Whatever. You can do whatever the fuck you want with your dead girlfriend for all I care. But you and I both know Mom and Dad won't like it." Selena tried not to stare at Diana's nude body. Diana always worked out naked, which she'd obviously been doing before her sister arrived.
Selena scoffed. "Big deal, Di. Luna's the oldest. She'll be alpha after Dad steps down, not me."
Diana a wicked grin spread over Diana's snout and her tail wagged excitedly. "She won't be if I challenge her and win! We all know I'm the strongest."
To sell her point, Diana flexed her biceps, making her firm tits bounce as she did. Selena stared greedily at the slab of muscles rippling under fur that was her sister's body. If it belonged to almost anybody else, Selena would fuck it in a heartbeat. But it was her sister's body. Her annoying sister, at that. Perhaps she should just use the normal version of the ritual... but did she want to? There were certainly worse bodies one could scissor for the sex magic version. It wasn't like her sister could get her pregnant...