I think you create some space and move forward with your life, detaching in a major way.
She throws R out there. You jump and offer some idea how that could be possible. She throws it back in your face, and now is spewing and treating you disrespectfully.
I'd shrug, go dark, and move forward.
Your posts are an awful lot about her again. Who cares. She's a WW unwilling to let go of her addition and anger. If you care for her the best gift you can give is the opportunity to walk her own journey. As long as you're attached to her behavior she'll behave worse trying to control you. Once you've detached and she realizes you aren't playing anymore, she'll have to decide what she wants to be when she grows up.
I looked at it like a game. WW would try to do things to get a reaction. I took the batteries out of the game. She could try whatever she wanted, the game was dead. I was moved on.
She may still be playing, and might for years. Yours might as well. Who knows. It's not about her anymore. What are you up to today?
Me:38 XW:38 T:11 years M:8 years Kids: S14, D11, D7 BD/Move out day: 6/17/14, D final Dec 15