Which, as far as she's concerned, means that the man had better be enjoying himself too. Dance is a lot like sex that way; better if both parties are having the time of their lives. Of course it's way less intimate, but it's also something she'll indulge in without a second thought, unlike pitching woo.
"Thank you," she says with a radiant smile as the song finishes. She wouldn't mind another dance, of course. Kid can swing. "One more?"