What can I do in this situation?

After 17 years and a divorce, God has restored me and my x-husband, we are now living together,I came all the way from Florida to be with him, however during our separation in life he re-married and is currently divorced from her. She and her husband lives across the street from us and is making my life a nightmare, she barges into the house if I don't lock it screaming about me , this woman don't care if Im standing in the same room.She calls my former husband every day to har him even if we go somewhere she calls him and chews him out. He works 3rd shift so if I have lights on after he goes to work she complains about that. We was sitting at the table one night eating when she barged in and screamed at him because we had food to eat. The drama and head games are so bad,Im 49 years old and Im too old for this crap.Her husband( which is a convicted child molester) comes over every day meaning that Im scarred to have small children around, which my daughter had2 step-kids that I love with all my heart but cant let her bring them here because of him. I have tried to be nice, I have tried to ignore her when they come in the door I run for the bedroom.My x-husband just says to ignore them but it is way past that stage. I think that he was mentally abused by her, so that's why he blocks it out. Don't tell me to go to counseling because I don't have the money for it.Please believe that Im not puffing this up I haven't even mentioned the really gross or bad comments in here .