Ultimately whatever she decides to do, it's her decision and there's nothing you can do about it. You can make the decision to remain there for her no matter what happens in the future with her and the baby's father, or you can let her sink or swim on her own. Personally I've chosen to remain there for mine no matter what stupid decisions they were making at that point in their lives. They always knew I didn't agree or approve of all their choices, but that I was there for them if they needed me. They (and me) all survived those years and they have grown up to be productive young (33,31,28 years old) people with families of their own.