AITASwipe

This may not be the correct forum, because it comes close to violating rule #8. For context, my father passed away almost 10 years ago. My older brother almost 25. My 83 yr old mother has become a bitter negative person. She doesn't like the people my children married, she is absolutely neurotic about keeping her house and yard absolutely spotless and clean. Every conversation must contain complaints about all her friends and acquaintances, insults disguised as comments, or some sort of negative drama. Lately there have been comments about how everyone just wants her money and we can't tell her what to do because it's her money. (and there is a substantial amount). We are on vacation this week. At a family dinner we were telling well used humorous stories about my deceased brother to my daughter-in-law, whom my mother doesn't like, because she's "taken her grandson away." Never mind that they're 25 years old, starting their new life - and why in the world would you want to be around someone who constantly insults you. Finally my mother lashed out and angrily declared that the conversation was over and started angerly listing ways I have disappointed her - not at all in the teasing and humorous way the rest of the conversation was going. When I confronted her she said she paid for the vacation (she did) and if I didn't like it I didn't have to stay. After a heated confrontation I packed up and left. I'm done. I'm tired of dealing with it. I'm tired of all the negativity, all and all the absolutely manufactured drama. I'm tired of constantly being stuck in the middle between her and my kids. Here's where I think ITA - 1) I completely blew up and totally lost my cool. 2) I left my wife and kids there. The kids (25 & 30 with spouses but no grandkids) have their own cars and can leave if they want. I offered to come back and get my wife, but she said she had to stay with the kids, and they begged her not to let them alone with my mother. My wife says she's OK, and she's amazed that I've played intermediary and peace maker as long as I have. AITA for leaving and letting the rest of my family there? I feel horrible about it but I think the situation had to be blown up to get through to my mother how badly she is damaging relationships.