How to Legally Protect My Mother from an Abusive Father

Hi everyone, I’m reaching out here because I’m in a desperate situation and need advice. My father has been mentally and physically abusive towards my mother for over 25 years. She tried leaving him once, but he threatened to harm her family, and she returned out of fear. Recently, he came to my place in Bangalore, and after a huge fight, I threw him out and told him never to come back. My mother is now living with me, but when she went back to Mumbai briefly for some paperwork, he tortured her again—accusing her of infidelity, raising me against him, and threatening to destroy my life if she ever left him. She is terrified of him and believes he might harm her or worse. She also thinks she has no choice but to endure this because "it’s her fate." I want to show her that we can legally protect ourselves and fight back, but I’m not sure where to start. I’m financially independent and can support her, but I’m worried he might try to come to my place and forcibly take her back, claiming she’s his wife. We don’t have much evidence of his abuse except for verbal accounts from relatives. What legal actions can I take to: 1. Prevent him from coming to my home or contacting her? 2. Protect her from his threats and ensure her safety? 3. Convince her that it’s okay to fight back and that she doesn’t have to tolerate this anymore? 4. Temporary measures to protect her and myself until she is ready to file complaint. I’ve heard about protection orders under the Domestic Violence Act, but I’m not sure how to proceed or if it’s enough. Any advice on legal steps, helplines, or organizations in India that can help would be greatly appreciated. Thank you in advance for your guidance.