Precautions if wife intent to commit suicide and mental torture

My wife decided to leave me after just 7 months of our Hindu marriage – primarily because she doesn’t like my mom and hence wants me to leave my parents and live separately. I have summarily rejected her proposal. In those 7 months she has threatened to leave more than 15 times. Eventually she did so in July 2017. She is living with her parents now for the last 3 months. She is also pregnant with our first child. Before leaving me she had calmly expressed her intention of committing suicide. To save me from legal troubles, she made a video confession about her intent to commit suicide in future. She has also given me a copy of the suicide note addressed to her dad, to safeguard me against any future legal proceeding. I DO NOT wish to continue with this marriage. And I wish to keep Law in the loop as well by filing an FIR about her suicide confession. Divorce through mutual consent is less likely. Pls Advise. Thanks