She starts to search

Panic begins to well in Emma's mind, and she quickly looks around, there's definitely no sign of the clothing here.

She pulls her skirt up her body, using it to at least cover the bottom of her breasts, but it leaves it so short that it leaves the bottom of her arse on display to you. There's no way to keep herself completely covered.

She makes her way down one aisle to the next, no sign of anyone around, but no sign of her clothing either, until she suddenly finds herself on the front wall, the long front windows, shining light straight into the library.