False charges of 376 by girl friend.

I am married and seperated from my wife. And I was living in a live-in relationship with a graduate, divoced woman and mother of a 8 years son. She was working with me. She proposed me for marriage and commited a relationship. After a years she joined one of my client's school as an administrator. After a year she delivered a baby girl with my relationship. She given my name as husband at all her places from flat owner, hospital, School, in her friend circle even in baby birth certificate. I fulfilled all her expances her son study fees etc. I also paid all medical bills while delivery and tratement of baby. But after one month of baby birth, suddenly she called me and demand me Rs. 50,000/- I told her to give money within 2- 3 days. After that she called me at her place for a urgent work. When did I come she was in Police station and filed an FIR with chages of IPC 376 & 419 without giving me any informations. Police arrested me immediately. Afterthat she was negotiating for Rs.1 cr. and a flat with my families. And she called my all friends, relatives and told that I was booked for rape case and I am in Jail. She sent our photographs, some call recording etc on whatsapp for proving me guilty. After 66 days I got bail from session court and start my life again normal and she run away from the city. Now no one know that where is she? Police also called me and asked about her. But I dont have any information regarding her. Now I have some queries as follows: 1. Would I claim for baby custody? 2. Can I file a defamation case angaist her? 3. Can I file a threatening and criminal conspiracy case? 4. What would be final conviction/order of court, when case will be on board? Waiting for reply.... Thanks