I have been in the acquaintance of very many young single mothers over the last few years and have learned that they live in a different world than you or I are accustomed to.

The opportunity for the father to "step up" is probably not there. $10/hr jobs don't support families or even pay child support.

You have some big adjustments to make in the way you view this to close the gap with the reality of her situation. Do a lot more asking than telling.