i am asking this question again bcoz i have forgot to mention other important relevant details

a decade back my parents died leaving me, my unmarried sis and bro and 1 married sis
my married sis claimed her inheritence which v gave her then made her sign following legal doc in registry office..
1] power of attorney to my bro
2] transfer of property in my bros name
3]indemnity bond
4]no objection- that v have received our huf shares from our parents property and in future v will reclaim any

question is that v all sis gave this signs to our bro- even though i had not taken any share
unfortunately my bro died now my sis is again reclaiming share
Q1] can a person get share once again on the same property[my bro has not earned any]
Q2] i am single and was with my bro so what r my rights
Q3] do married sis have equal right to their bros property