A little too quick and too observant - obsessively so, at times, fascinated by other people and never quite sure how they work - to have missed the difference, Ilde's frank curiosity is as evident as her immediate acceptance of not knowing. Maybe 'Penelope' is keeping secrets or maybe she's just slightly awkward (it's not as though she can throw stones there; the magnetic charm of the fae keeps her socially successful while her manner, part nature and part PTSD, makes the fact of that success slightly odd in itself), and either way the best way to find out is just to keep watching and see what unfolds.

If she doesn't find out, well. It's none of her business, anyway; most of the wizarding lot seem to have their own strange agendas and thus far few of them actually concern her. (She isn't sure whether or not her continued association with Lestrange counts as his agenda having relevance, given that she doesn't know what his agenda actually is and their conversations are mostly about poetry. This distracts her, briefly.)

"All right," she says, serene, shaking her hand. Her skin is much cooler and smoother than human, in texture a hint of the pearl-shine it has when visible. The longer they talk, the more evident it is that she's not listening so much as watching Hermione's lips move - she doesn't make much eye contact, but it seems more a side-effect of having to pay such close attention to keep up than discomfort or rudeness. "It must be useful, coming here from a world with magic formalized and institutional; I've noticed some humans struggle with the culture."

So do most of the wizards, but at least 'not everyone is human' doesn't seem to be one of their problems and that's really the one that she tends to pay any attention to.