Well I am assuming this in her house, not your work, first of all. I am not sure if scabies is contagious from humans to cats. If it is not, I don't think this should be a problem. Prayerfully she is nursing the cat back to health, as far as her taking these cats in, spaying them and setting them free, this is a good think, controlling the pet population, why would that be something to upset. She is doing alot for the community and animal population. She has a good heart.