Professional help can consist of many things, like someone coming out to visit her and help set things right, or just be a friend or whatever. Something the neighbors could easily do but I think that ship has sailed.
The county can’t watch every friggin house to see how many pets are accumulating, stop trying to blame them for the situation.
We had the “crazy cat lady” in my neighborhood growing up. Her grass was two feet tall and whenever we walked by at least several cats would run bounding over the tall grass away from us noisy kids. Noisy because we thought it was great fun to see, but little did we know that a lonesome old lady was dying by degrees inside, never gave it a thought. She did eventually, and her body wasn’t found for weeks, a pretty typical story.
The neighbors right to eliminate pests isn’t even an issue here, it would not fix the problem. If it’s a suburban setting with homes close together it isn’t safe to go shooting things anyhow, though I wouldn’t have a problem with it a little further out for example. Cats multiply like rabbits, shoot one and three more take it’s place.
The problem is her. She could be the sweetest grandma in the world, but she is causing a significant health hazard for others and citations, fines, probation etc. is not helping fix the problem.
Shooting the few cats that stray onto neighboring properties won’t fix it either. She needs help and it doesn’t seem likely to be forthcoming. Locking her up for ten days is a terrible thing, but what choice do they have? SOMETHING has to be done to address the root problem, that being her collecting strays she is unable or unwilling to take proper care of.
My best friend, you might even call her my girlfriend does the same thing except she has the resources to take care of them. She collects a few of them every once in a while and gets them spayed and vaccinations. Two of them get to live indoors with her, the rest live under her house or in the barn or whatever. She’s a crazy cat lady, but she takes care of the damn things. Also, she is out in the country and the neighbors are quite a distance away.