Physically emotionally and mentally harassed by my mother

I am the only daughter to my parents. Since my father's death I have been taking full care of my mother who is totally dependent upon me for her survival. Besides giving her every maintenance I have given her entertainment devices like TV Radio arranged for 2 domestic helps. Besides given her one of my mobiles as well. But 6 years after my marriage I had to move on into my father's place due to constant torture by in laws. I was then pregnant. My husband too moved out with me. And he too used to take great care of her .We were not able to hire any lodging for us then due to financial crunch and decided to stay with my mother which in turn would be an extra support to her. But soon she turned out against us being instigated by some envious relatives and started showing us the doors. She mostly attacked my husband with harsh and coarse words provoking him to speak abusive language. Every now and then she started cooking up a verbal fight over petty issues. She even attempted to hit my husband with a kitchen tool.She even tells false things to our relatives about him.Even gone to the extent of ruining our marriage by trying to establish that he has extra marital affairs. As of now she has become so desperate that she hit him with a broom 4 times which infuriated him to the extent of rummaging things in her room. She is being instigated and supplied with bad ideas by one of our relatives over the phone that I gave her for emergency. The recharge is done every month by me only. She doesn't continue talking with that relative in front of us and sometimes even closes the door while doing so and talks with that person 3 to 4 times a day. After the last fight on 14.4.20. I have taken the phone away. Can we get legal help and how can I safeguard my husband