[Leslie]

My key point though, remains that the parents, through entirely screwed in the head logic, figured they actually could leave a child alone, with them not even being remotely close at hand, so that they could go and stroke an obvious obsession.

These two parents are not in the same category as any other parent that has had to suffer the grief of finding their loved one dead through a cruel act of fate.

Damn it but I hope it makes them grieve. I hope they suffer for the rest of their lives.

They didn't even make the attempt to even try to ensure the safety of their child. They didn't even make the effort.