You did the right thing.
Whatever her motives, her tactics were abusive and unacceptable.
I was thinking...in a way, it's very much like ending any abusive relationship that has an addictive component. Maybe it would help to spend some time over in Friends and Family? I think many of the posts would be helpful?
You are stronger than you know.
Another big hug...
P.S. You have 10.5 months sober despite a mentally ill and abusive primary relationship. You can do anything.