emw said:That sounds pretty oblivious to me. She drops some kids off, assumes one of them is her son, and drives off? She had several opportunities - at the restaurant, at her mother's house, at the rink, at her house - to validate where her son was. She didn't.
I read the article and it sounded like there were several adults/cars involved. She'd checked him into the car from the restaurant and on a short drive, would you notice immediately in a people mover that your kid's not there? Even if you call out, would you think he'd fallen asleep with the over excitement and not worry. Then if it's a big car and a large group get out (who may also be staying with grandmother by arrangement), it's not such a leap to assume your kid's there when you're pretty sure he was in the car because you put him there.
I'm sure the mother is equally mortified to have this come out and feels horribly guilty. I'm sure now she (and other local parents) will make sure their car doors in the rear can't open from the inside, that they always double-check on all occupants coming and going. That kid won't be allowed on a sleepover without multiple calls being made.
I'm not saying that she's a perfect mother; just that it seems more like a genuine accident rather than negligence.