If ANYONE threatened to kill me, no matter who they are or what their excuse, I would request a Protective Order from the court. Any domestic violence entity in your state will help you do this. Or you can google it with the name of your county and get the information for how to file. In my state, the court hears P.O. requests even on weekends and holidays. The fear and anger divorce and custody fights can create make people go out of their heads. I've seen too many news reports of violence during these kinds of things to not be overly cautious. If you feel scared or threatened one tiny bit, trust your instincts and take appropriate action to protect yourself. Please.