Uhoh

My bro is back with his ex wife.u might not think this has to do with quinces but it does just read.she caused his drinking problem.he is in this rehabe place and he is doing great.he has acted like a jerk at 5 of my sisters quinces.and since he met her he got worst.he has argued with fam telling his ex she slap the s*** out of her.he wont care if i tell him i dont want her at my quince.should i make security to make sure she doesnt come in or what.