I was the librarian, yes. That was more or less the intentional setup, I could do my job and continue with my studies uninterrupted. It was a very convenient living arrangement.

[She's about to point out that those sort of things can be figured out in other ways too, but Yang's interruption cuts her off. She stares for a moment, unsure whether to laugh or wince, and points out mildly;]

I think he's trying to communicate something rather important as we speak.