We walk inside. The whole building is filled with books. "Try to find anything that seems like it's quite important to Earth history," I tell Elsa quietly, then I head off to get a book from one of the shelves.
After I got my sweets I went to the library and when I got there I got the books out my bag as well as talking to Lily. " how many books to return this time angel" I look at her and say " only 15".
She comes.over this way, presumably to get a book, so I shove the one I had back onto the shelf. She might figure something out if she sees me reading stuff about the history of Earth...