Some speedy mental arithmetic happens here-- she's not magic, though, that's something else and while there are Immortals who've mastered it in one form or the other (she knows of a few), she isn't one of them. Maybe the slight pause is just Benevenuta registering that he really is that much of a control-freak? Sure.

"Honestly, that sounds like the perfect place to get my bearings," she settles on, because her visits to Xanadu were brief - she's never spent any significant time outside of her own world. "I'm dropping by a pawn shop after this, so I should be able to sort out my own place this week, but I wouldn't be imposing--?"

Since they really do barely know each other.