Domestic Violence against man

HI, I am Akhlesh Gaud from Faridabad, Haryana I have an elder brother and sister and we all live with our parents. My brother got married 3 years back but since the marriage my brother's wife wasn't good to neither my brother nor my family members creating false rumours about the family and even abusing to my parents. So these disputes had been going for 1 year after marriage and between her parents came many times to discuss the issue but every time they apologized and asked for another chance and it repeated again and again. Then we asked my brother and her wife to shift to another place if family was an issue to her and there she was not allowing my brother to contact us whereas she used to call and meet her parents and even hit my brother, so they shifted back to the family and then again the misbehaviour and fights continues and one day she left to her parent's home saying she won't come back and from that day till today they are again and again asking to compensate while she is always abusing the family making cheap rumours about family, hitting the family members and false dowry cases. My family is worried that if we go to the cops then the issue can reverse to us as she will lie about the dowry case and can cook stories and police will believe more to her as she being a women and such cases happening all around. So it a very big request if you can suggest me any procedure to get out of this situation because i am worried if she comes back then she can also kill or hurt family members. Thank you Please do revert back.