My parents are married for last 22 years and their relations are not good from last 7-8 years. Now my dad hits my mom and also forces her to leave house. And he is also asking me and my sister to see where to live either with him or mom. But my sister is already having lots of pressure of studies as she is in 12th standard and my dad has decided that he will not lether study untill my mom leaves the house and my sister is too stressed right now she has not gone for her tution classes for last 3 days. Please suggest me what to do. WE DONT WANT OUR MOM TO LEAVE HOUSE and also don't want our dad to hit my mom and torture her everyday. should we take any legal action, or file a case in police station?