I'm sorry this isn't working out and sorry that she continues to use. I know this must be hard for you but reading your post it appears she wants you and the drugs, which makes for a toxic relationship.
You sound like you are doing the do things, and I'm glad you are thinking of moving forward in your life. You are worth so much better than all this and remaining in a relationship with an active addict only draws you into her hell.
Hugs