My cousin is my MOH and had a boyfriend at the time. I clearly stated to everyone that our wedding guests will be parents and siblings only. MOH’s mom was the only one offended she wasn’t invited and wouldn’t drop the subject. MOH then breaks up with her boyfriend and she tells me her mom is taking her boyfriends place as her plus one. Is it wrong of me to tell her mom she’s not allowed as a plus one? It’s not fair to my fiancés family or the rest of my family who respected our wishes.