[She hadn't thought of that yet. A flash of worry appears on her face as she drops the next books in; again with no results. She squashes down her worry. It'll be fine.]

Ah, it's probably one of these. Don't worry.

[What would Myka do?]

If for some reason they're not it, not that they wouldn't be. Just if it isn't one of these we'll just have to look for more books.