My wife along with their parents support is intentional preparing for divorce

My self, wife and my son are staying in ground floor, while my in laws( father in law, mother in laws, sister in law , brother in law ) are staying in 2nd floor of the building owned by my sister law. Brother in law marriage ends in divorce in year 2021. Now, my wife loves me lot but her dad is not allowing us to live peacefully . Her parents( her dad ) support her to mentally torture me without cooking, not taking care of my widow mother who lives in native place. All these happening bcs of her dad. She makes false accusations and threatening me to resolve issues in court. She is doing all these with her parents support, especially her father who is playing "split game" between me and my wife. They are disturbed because of their son divorce and they want me stand in the same status. We are having joint property registered in our both names with more contribution of investment by me and we are paying EMI . They wanted to acquire that by blaming me and throw false allegations. There is too much of interference of her dad in this case. Wife is not ready to live separately with me. Her mind is like "plain paper" and her dad is brain washing her. So she is taking these steps. Ofcourse, nothing has gone legal. However, I feel too much scared of this as I am alone staying with them and I don't know what to do. Please advise