He gave all of his power to Arwa, and she had her name mentioned in the khutbah directly after the name of the Fatimid Caliph, al-Mustansir Billah, signifying her authority to rule. She reigned as co-regent of her mother-in-law until the latter's death in 1087. In contrast to her mother-in-law, queen Asma, Arwa did not appear unveiled when she attended councils as Asma had famously done.
Asma
Arwa