Crackhead Bitch (RANT)

My SO mother is a crackhead. She's already attacked me once (while pregnant). I was under the impression she would be put out sooner than later due to her instability and me refusing to live with my child here (I am currently 27 Weeks and 5 days). She half ass tried killing herself for attention a couple days ago and is in a half way house. My SO called and told her she is not welcome back until she gets her life together. She had a TERRIBLE history of drug abuse, physical abuse toward my SO and his siblings. She legally cannot have contact with any of her other children until they are 18. She refuses to work or do anything for herself. She gave up custody of my SO and his siblings LONG AGO. His dad is now saying my SO shouldn't give up on his mother just to make me comfortable. I am BEYOND BEYOND through. I am working a shitty part time job and literally just started working from "home" (here where the crackhead will be returning). I have no money to leave. I gave up my apartment a little while ago due to me losing a good job and then my unemployment being cut.  I literally have no money and most of my living expenses my SO takes care of because he knows I don't have it right now. And we were going to stay here to save money and get stuff for the baby and get a car.