Extensively enough to know who we are at home and our skills.

(although he isn't just going to give more than that, and reveal to strangers who he is. his skills, at least some, they're fine to speak of; he doesn't mind it, and in fact, they might be important for whatever they might come up with.)

She can, most likely, but I do not believe we will be able to communicate without it. I do not think she is, though.