It's clear in the way she blinks at him that this is not anywhere near the realm of topics Ness was expecting him to be interested in, and she looks a little lost for an answer for a moment while she adjusts to this new reality. Only a moment, though, and then she blinks again, and looks away to squint at one of the shelves.

"Hmm... We're a bit small of a library to have anything too advanced, but I think we have something on the basic theory, if I'm remembering right..."

She comes around her desk, crossing to the shelves where they keep their small collection of books on magical theory. As she peruses spines, searching for the one she's looking for, she calls back to Vanya with a question.

"What's your interest in the topic? If you don't mind my asking, of course!"