I wanted to jump in and agree with what others are saying. All the things you need to be working on now are things to improve yourself. Nothing you will do can bring her out of it, but there are plenty of things you can do to prolong her progress. This of course is something that you will have to figure out...much like her stuff is what she needs to figure out. As much as we will tell you to detach and get a life and focus on being a better you, somewhere inside you most likely will put that off until the realization of its truth hits you like a light bulb. Her stuff is the same way. You can do all you can to try and change her path, but she needs to figure hers out too. Right now you are on separate journeys and there really isn't anything you can do to change that fact. Its hard and it hurts, but those are the cards we were dealt.
Just keep posting, asking questions, and venting. We are all here to support you and guide you the best that we can. We are all in this thing together so lean on us when you need to. There are many very insightful people on here that blow me away with their advice and suggestions.