Still: The ring hurts; sorry it's happening to you. Eric has given you some good advice unvarnished. This is no time for wishful thinking. You only know what you know, and that means you don't project things to be better than they are, but also refrain from projecting things to be worse than they are. It's very easy to do both; we then seek evidence to confirm what we believe to be true. All you can do is watch and react to her actions. They might change on a dime, and you can't control it.
The best you can do is to be there for her if she does shift and want to work on your M, but if she wants out she's gonna find a way. That sucks, but that's the reality of it. You must take care of you, in all facets of your life, and work on yourself. That is what you can control. Look inward and see what needs to change so that you can live the life you want. She has to decide whether she wants to come on that ride with you. You don't get to make that decision, I'm sorry to say. It hurts losing who we thought we were. But I, and many others who have been down this road, affirm that who you can be in the future just might be far better than you ever thought possible. Life can get deeper, richer as a result of this. Resolve that you will be not just OK, but have a wonderful life no matter what happens here. I'm not saying that every day is easy, but you can live a more meaningful life. I wish you well; these boards are a wonderful resource. Continue to rely on people here, and on your personal friends too.
