Covering the hair and body with blackness has nothing to do with free will or doing it because you want to/it looks good, but being forced to do it, else things would happen to that individual.
It's "the right thing to do", just because x and y think so, not that the person itself wants to do it.
It's probably "the best" thing to do unless i want to get stoned etc.
If things were different down there, make sure the women would rather wear whatever they want instead of covering themselves with dark sheets and black tents.
Do they not have any self-discipline down there?