What would you do if your daughter lives with a group of girls in a private work accommodation and has removed her hijab, claiming the existence of an Azhari fatwa stating that the Quranic text does not explicitly mandate covering the hair?

Your daughter's living with a group of girls is not a calamity, for a woman's residing in another country without a mahram is permissible if temptation is avoided and suspicion is absent. The mahram is only required for travel. The calamity lies in her removing her hijab and uncovering her hair before non-mahram men, which is undoubtedly forbidden. The claim that Al-Azhar denies the existence of an explicit text obliging women to cover their hair is false. Her work as a flight attendant, as described, is forbidden. It is your duty to advise your daughter, enjoin her to do good, and forbid her from evil. If she does not respond, then you must address whoever has authority over her, such as her father or brother, for he is responsible for those under his guardianship, in accordance with the Almighty's saying: "O you who have believed, protect yourselves and your families from a Fire whose fuel is people and stones," and the Prophet's (peace and blessings of Allah be upon him) saying: "Indeed, all of you are shepherds, and all of you are responsible for your flock."