My sister died before she married

Q: I used to live with my mother, aunt, and brother. My mother died eight years ago at the age of 100 and did not have other children besides me. My aunt died fourteen years ago also at the age of 100 and did not leave behind any children or money. My brother died thirty years ago at the age of 30. He did not leave any children or money behind. My mother, my aunt, and my brother all died before performing the obligatory Hajj which is one of the five pillars of Islam. Out of fear of Allah (Glorified and Exalted be He), I decided to ask Your Honor whether I must perform this obligatory act of worship on behalf of my mother, my aunt, and my brother?

(Part No. 11; Page No. 57)  A: If the case is truly as you mentioned, then it is permissible for you to perform Hajj on behalf of your mother, if you have already performed Hajj for yourself. This is if she did not perform Hajj due to her inability to perform it during her lifetime. However, if she was able to perform Hajj during her lifetime, then you should assist someone financially to perform Hajj from her money. If you perform Hajj on her behalf , it will be sufficient. We hope Allah will reward you greatly for this deed as your performing Hajj on behalf of your mother is one of the greatest ways of showing gratitude for her. As for your aunt and brother, if you perform Hajj on their behalf, it will be out of your kindness to them. We hope Allah will reward you for this. However it is not obligatory for you to do so.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.