She should have been caned as well as the ticket.
It's funny how there are two thoughts on this; first, like me, "stay the **** out of the left lane unless you are setting the pace/driving fast", the left lane is for passing. The other thought is "I am not driving over the speed limit and I can stay in the left lane as long as I want". It doesn't matter to them that traffic is backing up behind them, people get frustrated and do stupid thing to pass them. They just mosey down the highway, oblivious to anything and anyone. I can't stand it. My wife gets short with me because I feel compelled to help train them how to drive better. I will drive behind them and flash my lights at them, blow the horn. Usually it gets their attention and they move over. But not always. Sometimes, when I get around them, I will "clean my windshield" by using my washer for an extended period of time.
In Europe there is very little tolerance for this. Police will ticket you and other drivers get very aggressive if you don't get out of the way. It is a pleasure to drive the German Autobahn because almost everyone knows how to drive. You can drive safely at over 100 miles and hour