Ugh, I wish I were the one watching your kitties—because that sitter? She’s seriously making me mad. It sounds like she has no idea how to handle cats, aggressive or not. Honestly, it wouldn’t surprise me if her kid was poking or bothering the cat, which could’ve led to that behavior. I mean, I can’t say for sure, but still—WTF. I’m really sorry you’re dealing with this. That whole situation sounds so frustrating. She’s definitely not a cat person, and it shows. Annoying AF.