Sadly, there's no one to stage am intervention with, at last not anyone she knows and would care about. I almost, almost got her to agree to see a therapist, but she hasn't made the call yet.
Unfortunately there is no way to walk away from her. While the house would be big enough, the living room is right near my bedroom. Even with the door closed and the tv or music on, I can still hear her. I do take the dogs into the bedroom with me though. We get away as best we can.
Is there a good way to do an intervention with just one person? Is there a way to keep her from getting defensive?