If you truly love *her* (not what you Want her to be) and, AND she's willing to work through the anger and abandonment and other issues, help her by being there as a friend, but do NOT get married until After she comes out from under all that baggage.
If she mentions marriage everyday, it sounds like she feels she NEEDS some hold on you to *keep* you. People should only make a serious committment to each other (like marriage) because they both want to, not because one or both need to. Marriage doesn't solve problems, it magnifies them.