Married daughter share in father earned mother property

Hello sir, My Mom has one brother and one sister.my mom married in 1982,my aunt in 1998.we have a G+1 house in yousufguda.My grandfather purchased plot and constructed it and the house is still in my grand ma\\\\\\\'s name.My uncle and his wife are collecting rents from it since lasst 10 years when my grand pa died in 2004. My first question is whether my mom has equal share in it or not according to 2005 amendment act and second one my uncle is saying he had given some amount to my grand pa that time and with that my grand pa constructed house and put it on grand ma\\\\\\\'s name and so my mom and aunt has no rights in it now.Is this true?Once my clarifications clear, we need to immediately hire an experienced lawyer for this becasue opposition(my uncle\\\\\\\'s wife brother) is lawyer and playing dirty tricks with our property.grand pa and grand ma deceased before 2005 and no partition happened till now and no will executed...thanks in advance