Even if they have, you should tell her to ease up on the gas when traveling through redneck areas. There’s still the sheriff, and the state patrol.
She doesn’t have a lead foot, but speed traps like Waldo, that never mattered. If you can’t see the speed limit change signs, you can’t decrease your speed. That’s what makes them a speed trap, the poor signage. If it is posted well, then she’ll have time to make adjustments.