my sister (daughter of my father's ex-wife)ask her share on our house which my father sell to her wife (my mom)as per agreement made before he died. after he passed away she send a notice through advocate to provide her share.we are ready to go court for our justice. please tell what are the documents needed to produce in court? at the same time my father take a agricultural loan in sbi with the gold of my sister (my mother's daughter )after father passed away,my mother pay the loan amount, but bank ask the sign of all legal heirs. but the sister(daughter of my fathers ex-wife)were refuse to sign.what are the evidence needed to produce court to prove that gold is ours.?