Divorce

I married on 15th Dec 2018. In April 2019 she noticed pregnancy, but after some days baby was missing and doctor told to do DNC. We aggred and do so, but after 2 days her pain increases and a major operation done. Senior doctor told that it was unfortunate for us and no fault found in treatment. Then i send her to her father's home to take rest for some days and i visited her daily. After 1, 2 months idk but she refused to came back, reasons i heard not from them, but from people around her as 1. That i was about to kill her. 2. That I was killed my baby. 3. My family visited her and her parents insulted 4. Then i asked to come back, but she refused. For last 4 months we haven't talked, she switched off her mobile. 5. Then i send many seniors to solve but they don't response. And now she replies to the seniors that my father's wish is my wish, and her father wish is to talk in a round table after 6 months. Even they cannot talk to me. Now, what i do? I need a divorce. She betrayed me. Please tell me a procedure.