She does him while he's up at the counter, taking in what she can of his personality and mannerisms. Once he returns, there's a definite hint of smile on her face.

"I suppose the most appropriate place to start would be to ask what you're looking for, from the next submissive you contract to. You are the Dominant, your preferences are going to bear a lot of weight here."

Okay, she might be deliberately poking for a reaction, hoping to see where his head's really at. But gently, gently.