The lady in this story is what scientists label a "scumbag dick." After plowing down a 17-year-old kid on his bicycle, this lady did have the wherewithal to pull over, but only long enough to tell her victim she couldn't help him because his bloody face was going to scare her kids.
In the real world, this sort of thing isn't supposed to happen. This sounds more like a scene from Unbreakable Kimmy Schmidt you'd expect to see Jane Krakowski in, with her completely out-of-touch-with-reality character unable to comprehend how to deal with the situation in a way that isn't gross.
After she left, he was saved by staff from a law school. Lawyers stopped to help.
There are a lot of things you should protect your kids from in life, including drug abuse, the music of Taylor Swift, and Chris Columbus movies, but "protecting" them by avoiding helping someone you just ran over is maybe not the best idea. That's how you breed dicks. Bigger dicks. Bigger, throbbier dicks.
The lady explained to her victim that the kids were upset and late for school, so she had to go, at which point the kid she hit probably groaned in pain or some such, but the implication here is also that these kids are at least 6 or so, probably. They're old enough to realize mom is some kind of magnificent asshole and that they seriously just ran someone over and left him on the side of the road. You have to figure that lesson is at stark odds with any lesson you're worried about them learning at school, unless you're maybe a member of one of the more evil clans on Earth, such as the Trumps or the Cruzes (no first names; you can't get mad at me!).