Regarding mental torcher and violence

My sister got married just before a year at Pune which is 1000 km away from our house. Earlier her husband was working in our city and has seen my sister to marry due to other we have denied for 2 yrs and after forcing marriage was done with fully arranged manner. Now he is torchring her to leave this house my mother will live here you go. My sister denied so many times, our parents told she will not leave house in any condition. Than he started gali gaoj with her and physical torcher like slapping, pushing etc. After tolerating all these thing she has not left that house and started working at pune to become self dependent. Now he started another thing and say if you will not leave house than i will leave and 15 days, 1 month, 2 months he stays away from home and never pic phone call of his wife, even his family member never pic phone and doesnot support. He goest village and says to his family my sister is having problem with every one while it is not true. He never talks to face to face. We approached his friends also but never get positive. My sister is going through mental stress what will happen, and if he will deny to pay rent of his house and if ask for divorce than where she will go, what she will do. When both live alone he is ok with her but when his mother and other comes he behaves like this. She want to live with her and dont want to break her family. He always threat her that any how you have to manage my family other wise he will file a case that my sister abuse his family which is not true. He is quite smart at the time of fight he records her words but his does not. Earlier my sister was ok with him and his family but beacuse due to again and again torcher because of family she started less talk with family. Please suggest legal rights and beacuase of his family what action he may take.