The two of you have been through alot and your both young ( not sure how old you are ) . Now your both seeking help . Trust me people can change in time . In fact we all change in time and by seeking help hopefully it will be for the better.

Like you said you want to be there for her now more than ever and that is what makes a relationship. It's easy to be there for someone when the times are good , this will make you two stronger in time.

I or anyone else can't say that she will change , but atleast she is trying and that is what's important right now.

Not really sure what to say .... Goodluck.