Well, I'm sorry, will be in the minority here I know, but having suffered the intrusion of friends in the past due to their 'tiffs' and a night's sleep ruined on many occasions, have now hardened to this state of affairs and would have boxed her ears and sent her home.
Different, of course, if he is a wife beater etc., but sounds all very churlish to me, and feel you should be cruel to be kind here... sorry ...
