my brother married in 2000 & lived with wife upto 2003 & no children Then she went to her house. We tried several time to advice & take her to our house, but vain. In between she studied teacher training with my brothers earning. At last I informed police deptt. Then they separated by mutual understanding. She also handed-over mangalsutra to my brother in front of Police Inspecter. After six months we tried to get marriage another girl. Now she demands money from us what to do?