It doesn't sound like the guy's problem. It sounds like she's extremely confused and needy. She just can't live without a man in her life. Since you don't to take her back, she's stuck with this guy, nor matter how badly he treats her.
She just can't stand the thought of being alone. It's good that you're not taking her back. However, I suggest you stop getting updates about her life. She's going to have to figure this out on her own, it's not your responsibility anymore. You have your own life to worry about it. If you try to help her, you're going to be stuck in time. You're going to be trapped with all her problems and can't get on with your life.
It's time for you to move on to bigger and better things buddy.