It’s a matter of principle. She should sue.
“All that is necessary for the triumph of evil is that good men do nothing.” (Edmund Burke)
If she could prove that he later used government resources to determine her address (and really why would he have to do that as he would have a report on his desk with her address from the citation issued) that would be a matter of principle. Otherwise all we have is cop that came across a woman he found attractive in the lawful pursuit of his duties where he was required to see her address. Is there a principle where he should use brain bleach so that he doesn't remember said address? Should a cop be prevented from asking any woman out that he has ever come across in his duties? What principle are we talking about here?
This is meritless lawsuit from a bitter person that got a ticket, probably angry that her flirtations didn't get her out of said ticket.