@trainermc,
Well, you can't make that happen. She has to want it.
Her low self esteem and past relationship with an abuser are the problem. Some girls LOVE those bad boys - they are so exciting. Hurts so bad, and all that crap.
So she wouldn't even recognize a nice, stable fella if she was in bed with him - (oops, that was you, wasn't it?) Besides, why would she want to CHANGE? She doesn't see the problem or what she needs to "correct" to get up to your standards.
You are going to have to wait until she makes the first move to come back. IF she does, take it slowly. She is not only a wounded bird, she may LIKE it that way. In the meantime, find someone whom you don't feel you have to fix up.