She so failed the basic protection clause of being a parent. So sad I am shaking here.
Perhaps I'm a failure too, then. I can understand her reasoning: it's cold, kid's asleep in the car, so leave it running so that the heater will stay on.....
Had it been me, I'd have turned the car off and locked the doors. In retrospect, the lady made a bad error. Personally, I blame the thief/murderer, but maybe that's just me.
I think the blame falls on the guy who stole the car and (presumably) left the boy to die...
I don't leave my kids alone in the car, but I understand it's not an unusual thing to do in some places.
I apologize, looks like you were right after all.