indian law

Distributing the estate according to Shari'ah

Q: My elder brother passed away in 2012 aboard. He was married in 1997. But from the 20th till his death they living separate. They don't have any kids. His wife wants to stay independent from our family. Now after his death she comes to us and asking for all his properties which he gave us to handle. We told her what Shar'iah told, we are ready for that but she told us we are Indian. She wants Indian law as here for Hindus. What does Shar'iah say about  this matter? Please advise.