I need help in understanding how to keep my family together. I love my wife and our only daughter very much and I don't want to lose them. I'm hoping that someone here might be able to give me some insights or advice.

My BPD wife of seven years is six months pregnant and our entire marriage she frequently threatens to divorce me. A short time after a divorce threat (a few hours to at most a couple of days) she says that she wants to us to always be together. Things will be great for a week or so and she will say things like, "I can't see myself with anyone else" and "I am so grateful you are my husband." Then, something always triggers her and then she will say that our whole marriage has been awful and then she will start swearing at me, insulting me, and telling me to leave the house. 

This past week she got very angry and said either I need to leave the house or she does. I calmly told her that I was not going to be leaving the house. Without talking to me, she bought one way tickets and took our only daughter and flew to another state to stay with friends. She tells her friends that I am abusive and that I make her feel empty and that I am not emotional or romantic enough. 

My wife says that she will move back home if I find a place to stay outside our home for one month so that we can work on our relationship. She said that if I don't leave the house, then she wants an uncontested divorce so that we can save money.

I don't know what to do. I tried to put up the boundary that I am not to be told to leave the house. I have never really put up boundaries with her before and now she flew away with our daughter and is threatening divorce over it.

I've been trying to follow the strategies of being empathetic and understanding, but it just seems to be going nowhere and I don't want to lose my family.

Any thoughts or suggestions? Should I just leave the house so she will come home?