vampirequeen - i feel your question about why some of us are concerned that not all women who chose to cover themselves totally are doing so without pressure to confirm has been answered a number of times. (posts, including mine, about the pressure on feminists in the 70's to conform to oppressive beliefs practiced by a small number, with a big voice)
With regard to your question about the possible links between the expectation that women/girls will cover their hair/bodies/faces and sexual, emotional or physical abuse of women. It's my believe that in any community where women and children are subjugated, abuse is more likely. In any society, it is very difficult for children to talk about abuse, and where women are also excluded from any power or life outside the family, it seems to be it's much less likely that children will be able to approach their mothers, family friends, teachers, or other possibly supportive adults for help. Domestic abuse is also more likely to be hidden in some communities, or accepted as normal.
I don't intend to appear either racist, anti male or inflammatory and I appreciate Vampire's comments about a woman's right to chose what she wears. But - it's all about the extent of choice. That applies equally to young men and women from the indigenous british population, who tend to wear too few clothes in the summer and the winter, drink too much and fight when under the influence. That's a whole other topic, but I don't feel these undoubted problems mean that we're excluded from discussing any of these taxing problems that face us all