BUMBLE you asked: "How free, in your family, would your daughters be to choose not to follow a religion at all?"
if my children leave home as adults committed to the 5 pillars of islam il be very happy. the hijab is not one of the five pillars im not as concerned about that for my daughter as i am that along with her siblings she prays the 5 prayers, fasts in ramadan, gives charity and remembers to set aside some money to perform Hajj through all the stages of her life.
if my children dont keep that, then i hope at least they would keep to a muslim lifestyle of halal food - not consuming pork, alcohol, etc - and to halal money. as in being able to get a halal job and earn a halal income and not be susceptible to haram means of earning money even if its plentiful or they lose out by not entering into them.
but even in my own generation, the percentage of retention of the muslim faith from one's parents is 77 per cent: www.bbc.co.uk/news/uk-wales-17023858
so almost a quarter of my generation brought up in a muslim family already have left the religion. im not naive to think that my children will automatically follow my faith. theres a saying of muhammad (pbuh) to do with child rearing...
"Play with your children for 7 years, then teach them for 7 years, then be their friend for 7 years, then let them go as you've discharged your duty to Allah".
so i have my comfort that if they decide later on not to follow religion or even believe in God, then that is between them and God. i cannot compel them or force them, the Quran is absolutely unequivocal about that:
"There shall be no compulsion in [acceptance of] the religion. The right course has become clear from the wrong. " (2:256)
"Had your Lord willed, all those on earth would have believed altogether. Would you then (O Muhammad), compel people, so that they become believers?" (10:99)
''Had God willed, they would not have taken others besides Him in worship. And We have not made you a watcher over them nor are you set over them to dispose of their affairs." (6:107)
"Say: it is the truth from the Lord of you (all). Then whosoever will, let him believe, and whosoever will, let him disbelieve" (18:29)
"Verily, this is an admonition, therefore whosoever will, let him take a Path to His Lord" (73:19)
"Say: I ask of you no reward for this, save that whosoever will may choose a way unto his Lord." (25:57)
"Nay, but verily it (the Quran) is an Admonishment, So let whosoever will pay heed to it," (80:11-12)