You have to remember this was 35+ years ago when this all happened. Things aren't what they used to be now. People didn't make long distance calls back then, because it was too expensive. You lived out it in the middle of nowhere especially back then, you're on your own. No one is coming to help you if you're in serious trouble. My parents had this joke. They said the fire department had a perfect record around where we were. They hadn't saved a house yet. Don't get me wrong, they really respected the firemen. The point was that when you live 20+ miles away from the fire station, there is no possible way they are going to save the house in time. There was no GPS, and 911 had only been invented a little over a decade before. A lot of people didn't even own phones.
It's easy to talk about the rule of law, and how they should let the justice system work it out, but it's a different kind of law in those parts. In a town that size, everyone knows everyone, and you're always talking to someone's brother, cousin, sister, etc. Oh you filed a report against someone?...yeah word gets around. The kind you don't want. Evidence gets "lost", etc. A lot of times it was (and still is in certain places) easier to just keep your mouth shut and move on. I'm not saying I agree with what they did, and I wasn't in their position, so I don't know what I'd do. I can sure see why they thought that was the only recourse they had though.