The book waits for Angel to finish, pleased with the care she takes with the books despite her own haphazardness. Once she's ready, the book girl starts down an aisle, trailing her fingers over the spines. She's certain it was in this direction to start, at least.

"Oh! That seems like a clever system. But what happens to the impurities?" It seems wrong, somehow, that they would just disappear. She stops for a moment to investigate a shelf, then shakes her head and continues on when it proves unfamiliar. "Hopefully we can find you a hint, even if you have to go elsewhere to get all the answers." Honestly, she thinks there's a good chance Angel won't find anything without getting out, or at least remembering something more. But at least they've got a way to search for this.