The only time it is acceptable to leave someone like that is if they are abusive and you think they'll try to hurt you if you walk out. Any other time it is childish, selfish, and cowardly.

If there are issues, she should tell you. If she didn't, it either means she's too cowardly or doesn't want to work on them because leaving is simply easier for her.

Not attempting to work through problems and instead leaving without warning and with barely an explanation is an utterly shitty way to treat your spouse and very very selfish to your daughter. I don't care how unhappy she was, the way she handled it was cruel and very childish. Adults should not act this way.

I agree with the others here. Give yourself a few days to calm down. Heck, I need some time to calm down after reading that. That might give her some time to think about what a brat she's being. Then, contact her and see if she wants to try and work things out. If not, do what someone else suggested. get a lawyer and play hardball. I have a feeling you're going to need to. If she acts like this, I wouldn't put it past her to try and keep you from your daughter or to use her to jerk you around. Don't let her. Your daughter needs at least one parent who acts like an adult.

I'm sorry this happened.