Where was I when these people were determining that teenage girls think like this. I am 17 and I would never say that it was okay for a man to hit a women! Ever! It is never ever okay and someone needs to teach those girls that.
The fourth book was by far the worst book I've ever read. It was horrible, and now I am sad they are going to ruin the film series by adding the fourth book.
But I think whoever that source is was a jerk. Leave the little kids alone.