Kim
I’m just now reading this post. Your cause for concern is legitimate. These people may have had good intentions, but when an animal isn’t provided proper shelter, vet care, etc. then this is NOT animal rescue. Apparently these people were not providing the needed vet care, first examination, testing, etc. If I were you I would have nothing to do with them. I would get any of your fosters out of there, and not worry about upsetting this woman. From what you have described, they do not have the animal’s well-being in mind. You are doing nothing wrong, so I don’t think you would have anything to worry about as far as investigating you. I would almost rather see an animal put down than live in intolerable conditions. This is not humane and they are suffering.

Have you tried contacting any other organizations for shelter/foster referrals, such as Allie Cat Allies? They may be able to lead you to organizations that you can work with. I know this has got to be VERY difficult for you. Remember you can’t save the world, so help what you now have. Don’t take on what you can’t handle.

I admire people like yourself and Jen that provide these animals with a good loving place until they can have a home. Good Luck!