If son pays liabilities of father after his death does it effect to ACT no 13, 1986 in andhrapradesh

Hi this is rahul as per act 13,1986 in andhra pardesh which is supporting daughter has equal share in property. we are 2 brothers and 3 sisters. my expired in 1999. my mother is with me. i am 4th child of them. i have 1 elder brother, and 2 elder sisters and 1 younger sister. i have an issue that my father expired in 1999. before his death he has done his two daughters marriage in 1986,1988. at the time of my father expired my age was 13 years, my brother is 23 years and my younger sister was 10 years. i have 2 questions please share some details : 1) at the time of minor age my father expired. nobody is ready take care of ours (me, my brother and my younger sister). we did (means me and my brother ) my younger sister marriage in 2010. now my second sister claiming that she has right in property. she didn't take any responsibilities about us. is anyway to clear this issue. we didn't have any assets except this land. 2) before he death he has taken some loan in bank against property in 1994 which is mortgaged. after his death nobody is ready to clear the loan. I cleared the loan and released the mortgage.on this property my second sister claiming that she has right in property. she didn't take any responsibilities about us. is anyway to clear this issue. we didn't have any assets except this land. please help me [deleted] thank you.