I've never been so horrified....

I'm reacting to if what happens in the movie is for real. If they physically hurt the girl(s) for real. With the hot piece of coal, and so on. And how they reacted from the hostile tones and the screaming.
But I have to LOL... Do you REALLY think the most horrible thing was the man who picked her up and "did God knows what with her"?
I'm sure that didn't affect her very much. And certainly not much more than the other things she had to experience from neglect and abuse.
So typical to react on the sexual things!

You're so full of double morality:
"The average American would be horrified only because the girl happens to be naked half the movie, but overlook the other horrors."
Yet still, this is what you react to!
There's really nothing constructive with your post at all. Just meet ignorance with hatred. And how would that help the girl...
It seems to me that you have a lot of anger inside that you need to get out when you wrote all this. Focusing on the abusers and the violence, rather than the girl.
It's quite clear to me that people have different ideas what is good for a child, what is harmful, what a child needs and what it doesn't need.
So, how does this make you any different from the abusers?
Who's to say that, for example and just for the hell of it, a man that "picks her up and does God knows what with her", couldn't as well be the most suitable legal guardian. At least with the options given. And if we look at it from a more real and actual perspective how it could be in real life. Since this movie is quite polarized. For the sake of effect, probably.
What I mean to say is that a love for a child is love, and it can't be wrong ever. Because it means the child will get what it needs. While those who really don't care for children but either just abuse them or act like they do care will never give a child what it needs.
I'm reacting toward the generalizing perspective that most people have about "love and care for children". That it's so full of hypocrisy and selfishness. And in that sense, even what you would see as a person totally unfit to even be near children, could be the best choice. In the kind of world we live in.
Just moralizing about things is useless.
Give a child love, as much as possible. And the child will be fine. Physical and emotional love.
But most people are afraid of that. The physical part. That's why it's so much more easy to hit a child than to lovingly touch and caress it and be intimate with the child. And on the other hand, it's equally easy to moralize over that kind of love and intimacy and say it's wrong, bad and harmful. In other words, it's better to this kind of people to hurt a child than to love it. Since people can't separate love from real abuse, I mean. Which is the bottom line.
Anyone can have kids, I mean. But to give them love is another thing. To really care for them and give them love. And since people fight over what's "right and what is wrong", it will never change. Unless you live outside society with your children. Those people can give the children all the love they need, without being called monsters. And in the other part of society, the abusers will live, who either moralize about parenting or are abusers, or both. There's not much natural care for children nowadays, regardless. It's all artificial.
Or who can passionately love a child and show it, uninhibited? Not many. A love for a child should be larger than the love for all other things. And it should be manifested in a larger way as well.