She knocks, to be polite.
"You will find plenty of those up here, for that matter," he says. "Nonfiction mainly on the bottom. Decorative works mainly on the second."
"Ah." She peers through the fiction. "We might rez Tony's parents at some point. I don't know what the standing opinion on timing that is; I think I'll let Tony decide."
Bella picks out a book and flies into a chair and curls up in it to read. She doesn't go at top speed; with spare processing power she composes various demon related plans.
[She does not want to meet you,] says Sherlock. [She expects it would be unpleasant for all of us.]
"Is she - gone - or just tucked away again?"
"If this were me I would be finding someplace quiet to process everything by myself so I'd have something coherent to present to everyone else. But that's Bells." Pause. "Right?"