Divorce Support Forums: New here. Some advice, please!!!!

My wife of seven years found someone new over a year ago and began cheating on me. Eight months ago she moved out of our home and rented her own place close by. Our seven year old son was with me about 95 percent of the time. She would ask to keep him and then when he was there, she would have a babysitter and went to do her own thing. So then I would have to go pick him up and bring him back home with me. During this time I met someone new. She and I really connected and I moved her and her son in with me. Then in June my wife made the decision to move 2000 miles away with her boyfriend and left our son with me. In July she requested that I send him alone (on an airplane) to visit her. I wanted him to see his mom, but I did not want him traveling alone to a place that he had never been. She became angry and volatile, making threats against my life and threatening to return to our home and kick my girlfriend out (even though my wife has a new home with her boyfriend in a different state). Granted the house is both of ours. Well, eventually she stopped calling, didn't even bother to contact our son. At the end of July I filed for divorce on grounds of Abandonment. She recently obtained an attorney and started calling again. I have no problem with her calling and wanting to talk to our son. But time and time again, when she does call our son starts crying when he is on the phone with her and adamantly refuses to talk to her. Then when I get on the phone, she starts with the threats. There is a Judgment Entry of Restraining Order, so her threats no longer pertain to my life, just her ability to come back and kick me, my girlfriend, and her son out of the home and move back in. I know that she is probably making idle threats, but I know this woman and I know what she is capable of. I am just terrified that she may follow through with what she says. Our first pretrial is November 13th, and I don't know what she attempt to do. Is there anything that I can do to protect myself?