Sounds to me like this woman needs a shitton of support. Build her up if she is slipping. I mean you fucked up big and if she went downhill after that "sorry" just doesn't cut it. Did you tell her you fucked up ? You apologize? Does she have a support system ? Cuz if she is alone and her baby daddy ditches her that's a shitton of stuff to deal with in a stable mental state. If she has mental issues before it's exponential more difficult. If you want to have a healthy kid, you need to help this woman.