Layla is not dressed in anything particularly beetle-related. She is, however, keeping half an eye out for people entering the library. There haven't been many, and the young blond man with the sharply pointed ears seems to be the only one who might be looking for someone, rather than looking to browse the stacks.

So she lifts a hand to wave him over - worst case scenario, he's meeting someone else, and she can possibly point him in the right direction after a bit of mild embarrassment.