Can a woman be a Mahram for another woman?

A: It is prohibited for a woman to travel without a Mahram for a long or short distance. Moreover, one of the conditions of the obligation of Hajj for women is to have a Mahram. If she does not have a Mahram, there is no sin on her to delay Hajj. The Mahram of a woman is her husband or a male relative who is unmarriageable by blood relation, marriage or suckling. A woman can not be a Mahram to another woman and her brother-in-law is not a Mahram to her. (Part No. 17; Page No. 340) May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.