Handsome men tend to be spoiled, so be careful. Sometimes, as you get to know a man, he becomes more physically attractive to you. I've been dating a girl. She's divorced, has already a kid. But the problem is that she doesn't forget her just broke up marriage, she's always remembering all the bad things, her ex-husband did to her, and she claims some of the guilt to me.
Divorce is a little like death, and the feelings after a divorce go through similar stages.
First there's denial, then depression, then anger and finally acceptance. Actually, the fact that your girlfriend is angry with her ex is a good sign. That's healthier than being depressed, which happens when the anger is turned inward toward oneself instead of the person who deserves it. Eventually, things will settle down, but she may harbor anger towards him for many years to come. I'd suggest you explain to her that everytime she gets angry, he wins.