Unless the OW has changed, I do know who it is. She is not a threat. I hate her, but no, she is not a physical threat to my child.
I want is that OW to have no contact with my child. Unfortunately I can't enforce that. In reallity I can't enforce anything. Not unless I want a custody battle. I might win, I might not. It won't be good for my D3 though. She needs contact with both parents, even if one of them is half crazy.
What I can do is ask that we make rules together that will apply to both of us about when and how much contact D3 has with "other people." I think by saying this should apply to both of us he will agree. He is not going to like the idea of having no control over who his baby is arround any more than I do.