Where to file the case for domestic violence?

My sister has been facing mental torture and harassment by her husband since past 3-4 years. From the very start, he has been telling her that he doesn't want to live with her and is dragging the relation. He shouts at her and does not even talk to her for days at a stretch. She works in a pvt firm and lived with her husband in Mumbai but a month back came back to her parent's house in Bhopal. He had been abusing and torturing her continuously. She is so mentally disturbed that she is slowly moving towards depression. Also, since the time she moved out, he has not even inquired about her. Can we file a Domestic Violence case against her husband? Can the case be filed in our hometown or do we need to file the case in Mumbai itself?