Though he should teach her what incurring the wrath of a man means (most women IRL think it means nothing, particularly because of that chivalric rule they exploit forbidding violence against a woman), it'd be a strategically unsound move. That snobbish whore wouldn't take that loss of face lightly, and would probably attempt to retaliate with her family name. Perhaps a harder slap, but definitely a disclosure of the day's events to Mone-san.