Sick as it is, what she is doing probably isn’t illegal, but I’d bet some conscientious cops could find a dozen things to cite them for (tho Trenton has the highest crime rate for a city its size in the US). Their neighbors could call the zoning dept if their grass was 1/2” too long. Just harass them right out of the neighborhood. But then another neighborhood would be stuck with them.
Mea culpa. The Trenton with the nation’s highest crime rate for a city its size is in NJ. There’s apparently a Trenton in MI. Who knew?