Daughter Right in property of Parent

My mother-in-law had constructed a house on his father's land in year 2000 without Transffering ownership of plot. Her brother had taken Rs 3 lakh debt from her and he give her assurance that he will not return money and permit my mother-in-law to build house on the plot. Instead of plot registration on mother-in-law name, he give a written stamp to give the ownership right of plot to her. But in year 2011 brother of my mother-in-law told her to vacate the house. She filed a case against his father and brother on basis of stamp paper. But case is pending in court. Plot is currently on name of grandfather of my mother-in-law. Grand Father is dead now. But father is still alive. My question is can my mother-in-law claim for her share as daughter in this plot as per Supreme Court order for rights of daughter in property? Another question is there is many other agriculture land on name of father of my mother-in-law. Can she make claim on agriculture land? Father is still alive.