I believe that everyone I meet comes into my life for some reason....even if our meeting or relationship is brief. I've learned something from that exchange. Sometimes the lessons I can learn from that person end and it is time for me (and them) to move on. And that's ok.
If she's not ready for recovery and you are, it's ok to move on. You never know....she may follow your example. I wouldn't count on it or expect it but it could happen. Personally I find people who wallow in resentment suck the life out of me. Their negativity brings me down--for whatever reason the more positive I am around them, the more determined they become to show me I'm wrong and they're right. So I prefer to allow them to be right without me as an audience.
Congrats on the changes you are making in your life!
gentle hugs
ke