Wife physically abused mother in law and now staying with parent

I got married in feb 2022 since my marriage my wife started verbal spat with me and my mother in law. Same was conveyed to her parents that her behaviour at home is not appropriate. But even after sitting down for discussion with her entire family she continued her misbehaviour with my mother. Finally things reached a tipping point and she physically abused my mother and than ran from the house claiming that my mother beat her and gathered people around and her family arrived and all of them started abusing me and my mother creating a ruckus around my house. After she pushed my mother i took my mother to woman’s cell police station they didn’t take my case. I went to hospital did her medical and came back to my house till then her parents and relatives had started creating havoc outside my house. After our neighbors told their family to understand and make their daughter realise her mistake but they instead went away to their place. Also while going back they went to police station and some police official called me to the thana next day to try and put pressurise me and my mother . As my wifes father is a retired police official they responded to their plea and ignored ours. They also went to local TMC office and from their local councillor also threatened us. Now since last one month she is residing with her parents .we are stressed as she might again turn up at our house and again demand to enter the house. My mother is a widow and we live in railway quarters. Please suggest what to do as local lawyers are all negative and nobody is helping us . I want to divorce her but all laywers are telling us if you demand a divorce you will get in trouble and all. Please help