hi my father had purchased a property in 1989 from X person the sale was done through a GPA holder which was not registred.Mr Y had provided GPA to Mr X for a layout and and sold the property.Mr. Y had adopted a daughter and had return a wil say that her daughter has share in the Property but at the time of the purchase the daughter was minor. if today we need to sell the property then is the signature of Y daughter required. pls suggest.