But they're obviously devout Mormons....not that all Mormons are this naive. Look at how young Elizabeth looked at 14, and even at 15, none of the obvious teenage manifestations that are hard to avoid, unless you aren't influenced by so-called "prurient" media etc. The whole family has a simple and old fashioned look about them a throw back to the 1930s when people did feed bums and help their neighbor.
I guess we're all too jaded to understand how some folks still live this way.
I think you are right. I hope the mother doesn't feel guilty about this. There are no perfect parents and it is very obvious that they love Elizabeth and all their children. They are a stong family and I hope that everything will work out well for them.