Agriculture Land in Bhuj

We had an Agriculture land in Bhuj which we sold in 2007 , and under 7/12 disposed off payment of lawyer by paying dem in cash however just 2 brothers name where specified in it, later ie now at present a girl claiming to be d sister of those brothers is asking for her right in money as a farmar.What should be done?Which sections to be applied? and refer some of the best advocates of bhuj for the case plz.