"Well, you could follow me if you're desperate to learn all the shortcuts the staff use." There are no shortcuts, Steph is just talking shit. The grin kind of gives that away, "Go grab a seat and I'll bring the books to you."

If he has no other requests, she'll disappear among the shelves to go track down some decent books. Politics, law and history, he'd said, and she grabs at least two of each because Mycroft looks like the sort of person that can handle a large reading load. Steph has pretty much confirmed her thoughts that he's new to the city, considering the line of research he's undertaking.

It takes her about fifteen minutes to grab everything she thinks will be useful, and when she comes back and finds him, her arms are full of books.