How do I obtain a restraining order against my biological father?

My brother has completed 7.5 years of his marriage but his wife is living with her parents from last one year. Now their family is threatening us that they file dowry and cruelty case against us. Kindly help with the solution

Whether bigamy case can be filed against Muslim person as per new Talak act if he married second time with out consent of first wife.

I am residing in Bangalore and got married to a girl in Vellore on 21st April 2018. After marriage, she was completely influenced by her parents and siblings. She started mistreating and harassing my handicapped mom and asked her to leave the home. She was compelling my mom to stay with my younger brother who is staying in a bachelor apartment. After some unbearable behavior of her, I filled divorce petition at Bangalore family court in June 2019. She didn't attend the court hearings but got a stay for the proceedings at supreme Court and requested for transfer to Vellore (Tamil Nadu) from Bangalore. Transfer Petition hearing will happen on 12th December 2019. I don't want to contest the case in supreme court and let it transfer to Vellore. Once the case is transferred to Vellore, I have the below questions. 1. Can I withdraw the case in Vellore and refile it in Bangalore with new petition number? 2. Should I attend at least one hearing at Vellore court before I could withdraw? 3. Will I continue as a petitioner in the Vellore court since she has filled for transfer petition? 4. How many times can I withdraw and refile it in Bangalore? 5. Will there be any chance of dismissal of my divorce petition if I refile it in Bangalore again and again? Reason- I don't want to have the court proceedings in Vellore because her father is a local politician and he can influence the case and threat to my life. I want to run the case in Bangalore. I am looking forward to your advice. Thanks!