Personally I suspect that Cosmic Beings has made this all up to get reactions out of us (as with the original thread) but it is never possible to be 100% certain with the internet 😖
I don't know the technicalities of US law with regards to manslaughter - it may actually be that a minor would not be held accountable whereas an adult would be. I'm pretty certain that the parents could sue him (or his parents/guardians) as well as the supervisor and whoever is responsible to cleaning and maintaining health and safety standards in the Church.
Incidentally, about infantile habits - babies do chew on objects, I put visible teethmarks into the head of my first bed. I suppose that broken glass is a definite possibility. I know my youngest brother was idiot enough to rap on the window with the inside of his wrist when he was over 8! How stupid is that? If the glass had broken it would have severed his arteries and he would have been likely to have bled to death (I've witnessed that happening to a minor as well when I was at school - I hope the poor child lived 🙁 ).