The burning fire in their veins crystallizes into a flaring core, a perfect sphere of compacted energy deep between their souls, made out of the raw, insane DESIRE TO BE MORE. It's not a human emotion. It's beyond that. Above that. 

It sears like a star, and brands itself deep into them. 

And abruptly she KNOWS the procedure will succeed. 

This NEED in her core won't let anything else happen.

Sable feels something truly bizarre happen in middle between the Morning-Glory girls' souls. She can't process what it was right now, but it's an unmistakable experience burned indelibly into her memory at this point, so she can deal with that later.

All she can think about right now is how she's pouring every drop of Aura she can into these girls to keep them alive through the transition. She can't think in words, can't speak, can't plan. All she knows is that as much Aura as she can stuff into the girls has to go in.

Luckily, one of the nurses attaches an Aura monitor to Sable just in time. "Gods. Orchid's running dry, here. I'm tapping in as a battery, someone call in everyone we can." She laces her fingers through Sable's free hand and squeezes tightly, reaching out with her Aura to try to touch Sable's Semblance. C'mon, notice I'm here, whole 'nother tank full of Aura to feed these girls. C'mon, Orchid. Pull.

Barely, dimly, Sable manages to perceive the sensation of another soul touching her own. She latches on with her Semblance, her metaphysical grip rougher than she'd normally prefer, and starts draining. Her breathing evens out a bit.

Over the next fifteen minutes, eight different nurses and trainees allow Sable to drain them each down to a quarter of their Aura reserves.

Finally, the changes stop. The strange liquid in the Morning-Glory girls' veins is used up.

Sable stops draining Aura from everyone the medical wing can spare.

She gasps herself awake, and looks upon what she wrought.

It looks like three years of dedicated aura HRT have happened in moments; the body has distinct breasts now, narrower shoulders, wider hips. The height's still about the same, but all the stubble that marked her face has fallen out.

She looks over at Orchid, and a smile comes to her lips.

Her voice croaks a bit as she first starts to speak, but she smiles and greets the girls. "Welcome back, Misses Morning-Glory. You may or may not remember clearly, but my name is Sable Orchid. We've just completely rebuilt your mind and souls. How do you three feel?"

December sits up slowly, her whole body still aching, and tries not to tug at the IV line in her arm. Her eyes settle on Sable as she rubs her face to get off the remnants of her stubble. 

... She feels good. 

She feels whole. 

"Better than ever," she says.

Fuck she's hot. And... that's just really good to hear. She lets out a long, relieved sigh. "I'm so glad. That... was possibly the hardest treatment I've ever done. But so worth it. Your souls were shaking to pieces in the storm, and I'm really glad I could help set that to rights."

"We really have three souls?"

"You really do! Nobody on campus is better-qualified to tell you that than I am, even. Aura-transfer Semblance that can stretch to soul manipulation when I work at it."

She lays back in the bed and closes her eyes for a moment. 

"That's so good to hear."

Her eyes open again, and she takes a slow breath. 

"Was that thing that happened in the middle there... supposed to happen?"

She thinks back to it, ponders it, shakes her head. "Honestly, no. That was completely unexpected and unprecedented. It felt like your souls contacted some external wellspring of power and claimed it, and then it had... was it a probability-warping effect?"

"I have absolutely no idea."

She focuses for a moment, feeling the imprint. 

"Whatever it was, it's now... part of us. And I don't think it's going anywhere soon."

She laughs. "Welcome to Beacon, where bizarre events happen at minimum once a month."

That startles a laugh out of her. 

"Alright," she says. "I guess I'll just have to do my best."

Gosh, she's really at Beacon, huh? 

She's never had good luck like that before. 

She grins warmly. "You'll do fine. I had an argument with the Headmaster, pushing him to find some way for you to attend even though you haven't been to combat school yet. Maybe auditing or something. You would've been invited on a need-based scholarship if your foster parents hadn't been declining on your behalf the whole time. We'll see what he manages, though."

They what.

"Anything is better than staying with my fosters more."

Speak of the Wizard and he shall appear? Here comes Professor Ozpin. He strides into the room, clasps his hands over the head of his cane, and gazes thoughtfully at December.

"You're in luck, Miss Morning-Glory. I had a spare bit of grant funding available, and repurposed it to cover room and board for a civilian auditing classes for the remainder of the current school year. Something tells me that our Miss Orchid will be willing to tutor you, which is fortuitous, because your only option to stay here longer than that is to join the academy properly. Learn fast, and you can become a second-year student next fall."

She's been voluntold to what? I mean, yes, of course she'll tutor the Morning-Glories (or whatever collective name they wind up picking), she'd love to, and probably the rest of JSMN will be on board as well, but what. Ozpin expects her to somehow turn a civilian into a second-year Huntress in a semester and a half?

Well, they have been doing the same thing with Jaune...

She tilts her head, and then nods.

"Yeah, I'd be glad to tutor you."

Holy shit it's Professor Ozpin. 

She looks back and forth between Ozpin and Sable, and nods. 

"Alright," she says. "I'll do my best."

"Rest well. Once you're cleared to leave, you'll be escorted to guest quarters in the first-year student dorms. You'll have a room there, unless and until you decide to move in with one of the existing teams. You'll join the students for breakfast tomorrow morning."