In 1996 my grandfather wrote his will in which he stated that he has 3 sons and he has given one home to two of his sons and the another properties of him will be given to his 3rd son which is my dad. And one of my aunt (bua) has one document which is named as Batwara Pawati in which my grandfather stated that my aunt has half rights of one our plot and this pawati was written in 1995. I want to know whether Will is more authentic document or a batwara pawati is more important document? Are we suppose to give her something or are we legally strong on the basis of will? We haven't registered that property under my father's name and now in 2023 she is asking her rights on that plot. So may I know what should I do?