If you and the township all know that this woman is a serial abuser of ordinance. And, I have met those before, often the town can be convinced to do some skirt arounds when you "help" them realize what this person costs them.
My mother was on the borough council where we lived and we had one of these people. She came to every council meeting with some gripe or another and most of them turned out to be non-issues. The council was able to tell her that she was setting precedent for others, from now on if a complainant could not prove that they had a specific actionable offense, the town could bill them for spurious complaints.
Each one of her complaints had costs tens of thousands of dollars in man hours investigating and legal fees etc. While some objected to the "access to the legal system" construct when the numbers were laid down of all of the tax dollars this woman was siphoning from other uses the referendum was passed pretty quickly. I don't know the specific wording of it so that people could file complaints or issues where they thought an ordinance was being violated (specific sections, law and order ordinances were in a different category) but they could become liable if they were noted to have filed an "excessive number" of unfounded complaints.
And yes you should follow up on the defamation angle.