Dont' forget one of the parents just suddenly and tragically lost thier parent. They may not be thinking straight. While I don't understand what difference it makes how he died I recently lost one of my parents and could understand how it might make you do slightly irrational things. and if you are a parent it definitly gives you a irrational need to over protect your own children
This is what I was wondering--if perhaps the parents themselves are having trouble facing the truth of what happened, or otherwise having trouble coping with what happened. Maybe they're grieving, or maybe they even blame themselves--without cause, most likely, but if they are struggling with the circumstances themselves, they may feel that their kid can't handle it because THEY are just barely hanging on.