Is it permissible for a woman to perform Hajj on behalf of her deceased sister who left money with her abroad?

It is permissible to perform Hajj on behalf of your deceased sister if you have already performed Hajj for yourself. As for the money she left with you, if it was a gift, it is yours. However, if it was a deposit or a loan, it must be returned to the heirs to be distributed according to Islamic law after settling her debts and executing her bequests. It is not permissible to perform Hajj on her behalf from this money before its distribution.