>Huh, now that we've got a better look at her...Well, she can't be an Oni. No horns. Which would also rule out any horned animal youkai as well. Which means she's not a deer, gazelle, rhino, or anything of that sort.
>...Don't see a tail there either, which would rule out almost anything with a tail too. Ears look a mite pointy...
>Oh hey, those wings look kinda batty. But there's no fangs, which rules out Vampire. So logically-speaking, she must be a Bat Youkai!