I am sorry to hear you're going through this. I have no idea about being a parent, but I've reinvented myself from nothing a few times too. It feels awful and terrifying. I guess one good thing is you know it's possible, having done it before. I hope you'll continue to post here for support.
One thing I do know about is addiction. Here is a resource that may be of use to you as you go forward. It can be important to get help for yourself, even if there is no goal to reconcile.
It's interesting, isn't it, that fundie xian groups tend to push marriage so young. That tends to just subjugate the woman--she hasn't built a career or sense of self as an adult, so she tends to not leave bad relationships. Getting married when you're so young and brainwashed seems to skip over several of te steps needed to make a relationship successful (not always, of course).