Wow, its not always easy to tell the condition of a cat as it sneaks through the brush on its way to go kill something. Many times its birds they kill. To the point where they will destroy the bird population in areas where the cats are out of control.
A veterinarian should be able to tell the difference between Tiger the kitty, and a wild, feral cat, or as you describe them “They are diseased nasty creatures.”, especially when she is walking up to it close enough to shoot it in the head with her bow and arrow, to get her first kill and at her home.
She wasn’t on Safari, in Borneo.
One of the primary rules of hunting is to be certain of what you are shooting at, so you don’t kill things that shouldn’t be killed.
Part of the issue is that it is fine by some people if cats are tortured, maimed, and killed. They seem to be fair game for some sadistic people. Not saying you are one of them, but there are a lot of people like that, including here on FR.
Interestingly, many of those same people would howl with outrage if a jubilant vet held up a beagle with an arrow through the back of its head. (Although I have know some lifelong beagle owners who might not, given the eccentricities of that breed)
And the vet deserves to lose her job. If I run a veterinary service, one of the fundamental principles for my business has to be a respect for animal life, in the same way a hospital should have a fundamental respect for human life.
Sure, vets have to put down a lot of animals. But it is one thing to do it out of necessity, and another to be a grinning jackass holding up someone’s pet. If I run a business, this smiling idiot is going to drive away my customers and destroy my business.
I don’t think anyone has a problem with trapping and euthanizing feral animals of all kinds, but that isn’t the way to do it.