Man, even AoL is still a thing.

I fail to see anything wrong here

Murder requires intent. Her intent was that the car would be running the whole time she was in the appointment. She wasn’t aware the car would shut off after an hour running in park.

That makes it negligent manslaughter.

She did leave the car running, but it shut off after an hour.

It’s still super negligent to leave a 1 and 2 year old alone in public for 2.5h, regardless of the weather.

Exactly. Even if it was 68F outside, it’s still extreme negligence.