It's now seven hours since I picked her up at the vet, and she has been feeling so bad from the anesthesia. Costello thought she was very strange when she came home and wobbled around. She just had some food so she's getting better now. It didn't cost me as much as I thought it would (in US$ 100). The vet said that it's good if it's possible to brush her teeth, but as you said, not all cats accept it and I guess she’s one of them.