A bad situation- advice needed

I will try to make this as brief as possible… I have a 6 year old daughter with my husband and we live with my parents due to our financial situation. We currently cannot afford to live independently from them. My husband lost his job and had to accept something for lower pay while he goes to night classes. I am a stay at home mom and watch my daughter while my husband is at work. My mother is a narcissistic alcoholic who has it out for me. She called a 51/50 on me because we were arguing and I took her cell phone from her hands. She told the cops I was a threat to her. She was wasted out of her mind, they had no clue and arrested me and sent me to the mental hospital. I was there a month. During that time, my mother called cps and told them I could no longer care for my daughter. They took away my custody. Now my husband and I have to fight for our custody rights in court. All this and we still have to live with her. She tries to push my buttons all the time and is constantly trying to break our family apart. Tonight she threw poop rags from her dog all over the floor and started screaming that I had to clean it. It’s total Cinderella treatment. She does all of this while my husband is working and not there to defend me. I am worried the cops will be called from her screaming and she will turn it on me like she has done in the past. This is our daughter and our lives at stake. She doesn’t care. She tells my sister we are using her. We have never asked her for anything of major significance. She will offer to purchase milk and fruit. We are not forcing her to.