When he said things like that with a straight face, it was hard to tell just how much she was being teased. Oh, he was needling her, she knew that— but he also seemed to be serious about the Nostradamus book and he hadn't completely answered her question as to why. Just for contextual information? Was he saying Nostradamus had been for real? He wouldn't get her to read several hundred pages of sixteenth-century gibberish as a joke, right?
Also— she'd never told him she was a Libra.
Rosario pursed her lips and decided to move on. "I think I got enough to start with," she said. There were books resting in piles all about the place; the first step would be getting them into some kind of order. Sort by Dewey number, maybe? She wondered if there was a Dewey decimal classification for magical spells. "I have to leave by six."