Well, at least she knows SOME rules of the road ...
My mother has a friend who is a police officer. Let's call her Betty. She has a daughter who we'll call Deirdre. Deirdre is learning to drive, and Betty was helping her practice, sitting in the car with her while she drove around in a deserted area, drilling her on roadsigns and suchlike.
Suddenly, a very drunk man stepped out in front of the car, bounced off the bumper, and collapsed in the road. Deirdre, however, did not stop the car. Betty yelled at her that she had to stop the car, it's illegal to leave the scene of an accident especially when there's a police officer in the car, etc ...
"I can't stop here, there's a double yellow line!"
(Luckily Betty did persuade her that stopping was ever-so-slightly more important, they went back and checked on the guy, and he wasn't hurt, because they'd been going slowly and possibly because his drunkenness dulled any pain.)
EDIT: In case people don't know, we're in the UK, where a double yellow line down the side of the road means you aren't allowed to stop your car there. So it does make a kind of sense, but ...