Gary said what I was going to say as NPR's All Things Considered even noted that the probability of girls as young as 16, below the age of consent were possibly bearing children.

I have no problem with polygamy, my only gripe with it is that once you get a huge group like that, there is a lot that can go wrong, from rape to incest to whatever.

And as Gary also said, I'm sure there is more than the news stories are telling is and if anything, NPR may be telling us more than the mainstream, but even there, they may be scratching the surface.