I think you did exactly the right thing. She has no self control. You don't want her around that way. I would suggest that both you and your daughter go NC with her. She needs to find out what life will be like without the two of you. It is a hard lesson. But if she is continuing the EA. It is only a matter of time till it goes PA. You have set clear boundaries. It would be one thing if there was contrition. But she will say and do anything to keep both you and your daughter and the OM. She must realize she doesn't get both.