Interesting. NOt a hunter, certainly, but she studies supernatural creature. Castiel wonders to what end. Wonders, briefly, what she'd make of him. He's already played part of his hand - his brotherposing as a trickster means she likely has him pegged as something either non-human or at the very least otherwise potentially powerful.

Right on both accounts, of course.

Castiel inclines his head.

"So you take an approach more anchored in zoology and anthropology."

Perhaps the end goal is merely to know. Castiel has found that few humans are satisfied with that, though.

"I'm familiar with Will O' Wisps, though creatures of supernatural origin can... differ among separate worlds. What are your findings on yours?"