Hey ford, I'm originally from Brooklyn, so I can curse with the best of them if I want to. And FIB's wife may be all those things, but as a woman, the c word is just really and truly degrading to hear.
FIB, you need to get the heck out of that house. In the meantime, it is not ok for her to verbally attack you, particularly in front of the kids. It is good that you taped it.
Let me ask you this, if I may. What are the parameters that you two have regarding the kids right now. Are there any? Like - do you have your days and she hers? You need to discuss this and figure it out while you are still in the house. Remember it is about the kids. Does she want you to run it by her before you schedule playdates on school nights. Do you?
It is not unreasonable to me if either of you do that. As a mother, I would want to know if my child was having a playdate. I would think you would also.
You need to tell her that you and she have to sit down and discuss this for the sake of the children so that there are not any more outbursts while you are living together. It is not ok for the kids to have to live with that.
And for the record, I dont like your wife either. I have sucked it up and bitten my tongue and lived with a man for 19 motnhs without a bad word out of my mouth for the sake of my son and he is 18. She needs to get herself under control and start acting like a mother.