Shouldn’t her granddaughter have been restrained in a child safety seat, and unable to reach down and pick up a gun?
Also, shouldn’t she teach her daughter that if she finds dangerous things, she should NOT PICK THEM UP AND PLAY WITH THEM?
I trained my kids about that before they were 3. You can’t watch them every second, and there are many dangerous things people leave lying around (like that woman who let her kids eat condoms someone left at a mcdonalds playyard).
I just today, took my two kids out in the drive way, one at a time, locked them in the trunk of the car, one at a time - after showing them the escape latch. They were outta there in nothing flat.
A good thing for kids to know about too.
Older cars however, may not have one.