I'm annoyed by this story before the first sentence is even complete. Who cares that she's a grandmother? What an absolutely irrelevant detail designed to preload sympathy for her before we even know any of the details.

But assuming the events unfolded as she describes, this particular case is clearly egregious. There's no evidence that this is the modal case. We're mostly talking about legitimate (if relentless) ticketing of traffic violations.

To the extent that an increase in the number of police interactions is going to result in an increase in the prevalence of bad interactions (which I think is true), the answer is much more automated enforcement.