Wife torturing husband's parents and sisters.

Sir I am an NRI small business man. my wife was working as a nurse in gulf and I never taken her salary.she has around Rs 4CR in her account. But when i purchased all my property in joint name with my wife name .I thought she may change her habit in future and take care of kids. My wife never taken care of children. They are major and well qualified now. They stay with me only on vacations. Both children are hate their mother because my wife never fullfilled as a role of mother. Now my wife started torturing my aged parents father 90 years and mother 80 years and spoiled their peace of mind. She has taken a court order under domestic violence from 1st class distric magistrate court. She is threatening my sisters and not allowing them to visit my parents.she wants my parents to be sent to orphanage.she has filed several case against my sisters and parents. Two times my wife beaten my parents and 2 FIR police charged and the same is in the court. Now she demands all property in her name.she demands 50% of property revenues like rent etc.she visit tenants and making problem with them. Both of us are living like a stranger since 15 years. She threaten me always that she will charge muder case against me . I regularly visit my parents. My children are asking me to file divorce . My daughter 23 years and son 20 years. Children several time asked her to stop torturing aged people.She never listen any one. She never stay with children. She is staying at the house where my parents staying. House is also joint name.My parents are also taken a protection order from high court. But no use police never attend when they call . My wife is spending lot of money to police. Some sincere officers visit some time and ask my wife to live with peace. But she always fight with my parents. I need an advise how to handle this situation.