There's a very simple way to solve this entire crisis. Install CCTV cameras in your entire home and start recording her entire tantrums. Keep the control of these cameras with yourself. Since this house belongs to your father technically she can't protest or stops the installation of CCTV cameras.
If you feel the necessity then approach the police to assist you in installing these CCTV Cameras. If that to do not seems feasible to you then you can get the same ordered from the court in the divorce petition. However, trust me this is absolutely not required. A person can do whatever he wants to do with his home. Its your father home no matter how much trouble she creates you please go ahead and install the CCTV camera without involving state authorities (police or court).
By the help of CCTV Camera you will be able to record her behavior and use that before the court to seek -
A. Divorce for your father
B. Compensation for the mental harassment which you all are going through by filing a separate criminal case against her.
C. Her ouster from the house based on her behaviour recorded in the CCTV camera by filing a separate case before the court.
Trust me the moment the Camera come into its place either she will mend her ways to stay in that house or she will leave your immediately. Or else she is going to fall into big trouble.