Right of working Daughter in Father's will

Hello, I want to file a case against my father who has created a mess in my family life. I reside from a middle class muslim family. I have a brother who is self employed and I work in a company as claims handler. My mother is having her hip bone operation in coming days and she weighed only 30 kg. My father is abusive toward my mother and even tried to assault her physically and this has lead to a fight between my brother and him. We have number of NC against him but there are no proper outcomes. My father latest demands is to leave his house as it is owned by him. Even we thought of getting rid of him and searched for house on rent but he said he won't allow to take anything with him. Plus he want 4 lakhs rupees from us. After this we decided to lodge a domestic voilence case against him. We visited a local lawyer today but we got really negative response. He said your mother can file a case against him but as soon as she does he will file a case against you and your brother and my job will be in jeopardy. Plus as your mother is not physically fit enough she won't handle long procedure of court. He said my brother is adult and i am a working girl so we dont have any right until his death. So do i have any valid claim on my house as my mother does. And if not do we really have other way that we can file a case against him.