You should check out that documentary, it goes into good detail about the case. The family is just delusional. Lot of ham apologists too, if you look at comment sections on the web discussing it. It was actually national news and discussed for a long time. Legislation was even created in response to it. Pretty big deal. It was weird seeing the details come out. Nobody knew the circumstances until later. At first it was "poor mother accidentally went the wrong way down the road, how could this happen?" Toxicology report came out and all that grief and support turned into righteous disgust and hatred.