[She actually scoffs at him. There's a twinge of amusement that threatens to leak out of her attempts at remaining composed and authoritative.

Definitely a foreigner. She makes a point of sounding stern; for all she knows this man could be a prospective robber, or worse.]

It means that you're going to remove yourself from the rooftop at once, or I'll drag you down and question you myself.

[Not exactly an answer to his question, but it gets her point across.]