The legal heirs of unmarried deceased sister have rights to a share out of her share in the property if she is reported to have died intestate.
Under Sections 15 and 16 of the Hindu Succession Act, 1956, the legal heirs of an unmarried Hindu female who dies intestate (without a will) depend strictly on the source of the property.
For property she earned herself, received as a gift, inherited from anyone other than her parents, or left to her via a will, the general order of succession under Section 15(1) applies. Since she has no husband or children, the property moves down the statutory ladder in this specific order of priority:
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Firstly, upon the Mother and Father: If both are alive, they take the property equally. If only one parent is alive, that surviving parent takes the entire estate.
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Secondly, upon the Heirs of the Father: If both parents are dead, the property goes to her father's legal heirs (e.g., her brothers, sisters, or stepmother).
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Lastly, upon the Heirs of the Mother: If there are absolutely no surviving heirs on the father’s side, the property finally goes to her mother’s legal heirs (e.g., maternal grandparents, maternal uncles/aunts).
In you case if your parents are predeceased then er share in the property shall devolve on her siblings of both the genders, who are the legal heirs of her father.
If your male siblings would like to relinquish their rights in the property they should execute a registered release deed in your favor after which you can apply for transfer of revenue records with he local revenue department and then apply for transfer of share in the society by annexing the death certificate, copy of the release deed and a copy of the revenue records on your name.