She'll take books containing mentions of phoenixes, hellhounds, werewolves, banshees, and kitsunes. She'll have to read them here, she has no library card and no proof of residence with which to obtain one.

There isn't much information on banshees, but there's plenty of lore on the rest.

Anything that stands out as potentially true, given what she already knows?

Hellhounds come to collect dying souls with fire at their heels? 

Werewolf myths are broad and vague enough that she can probably find something that matches.

Kitsunes produce foxfire when they rub their tails together, which is probably inspired by the will-o'-the-wisp.

Well, if nothing else, this will at least help some time to pass.

Eventually, the clock shows the passage of time. She should probably get going. 

Books to the return cart, herself to the door and thence the doctor's office.

Most of the others are already there.

She doesn't seem to be able to cross the threshold.

"Doc, she's here."

The veterinarian appears, and clears a line of powder in front of the door.

"She can actually cross it herself. It's fascinating how her powers interact with it, actually." 

"Yes, we spent a rather interesting morning looking at ways in which they do."

"That sounds fun? So we should all talk about what's going to happen next, right?"

"Right. Did you end up getting any good information?"

"There is frustratingly little available. I think hellhound is the likeliest possibility, the flames and the 'escort to the dead' aspect fit. I have no explanation for why he would be stacking corpses on the Nemeton."

"It's a sacred place of magic. It makes sense he would take them somewhere like that." 

"The Nemeton does attract magical activity, so if he's not fully in control of himself, he might just be drawn there."

"If he's not in control of himself, then who is?"

"His inner hellhound? If those work like werewolves."

"And werecoyotes, and banshees."

"Does that analogy suggest any approaches to stopping him?"

"If that's how it works, he might be able to learn to control it..."

"...or work around it. Me and Scott can talk to him. Kira and Malia, you work out a strategy in case he's just hostile."

"Are you willing to help if it comes to a fight?"

"I have no principled objections."

"Me and Lydia can try to figure out what's going on with him, and everyone else can focus on planning to handle it if it goes badly, or researching the chimeras."