Please note as per hindu succession act you and your sister has equal right on property which has devolved upon her if she dies without leaving will.
Section 15 of the Act delineates the heirs of a female Hindu and the order in which they are to succeed to her property if she dies intestate.
15(1) of the act provides for a specific order, in which this property divests;
“(a) firstly, upon the sons and daughters (including the children of any pre-deceased son or daughter) and the husband;
(b) secondly, upon the heirs of the husband;
(c) thirdly, upon the mother and father;
(d) fourthly, upon the heirs of the father; and
(e) lastly, upon the heirs of the mother