Childish. It only tells her friends, if you are that bad then she sucks to have picked you. Hopefully it blows over for you, til then it just blows.
I wish my husband would go with his friends, it makes for everyones happiness, to have a little me time. But we dont have kids at home. But if we did, I would want him to go. I never got that selfish little bi**^ mentality. ME< ME < ME.
Be calm and comforting to the kids, dont belittle her like she does you. Just tell them, moms upset, it will be ok, trust me they will remember. I have proof, they are 38 and 42. And it wasnt til a few years back, they asked. "I heard Dad did this and that" why didnt you ever tell us? Because you were a child and didnt need to deal with it.