Is it worth it to license my cat?

I see no reason to get your cat licensed, because she does not go outside. Mine have collars with my name and phone number on them just in case they ever sneak outside. Also you do need to prove their vaccinations at city hall. Its a waste of time really. And next year if she doesn't have updated vaccinations, you won't be able to license her anyways. Btw I can't believe how your vet handled the situation...My cat is bad like that also, so my vet put a Caution: Aggressive Cat sticker on his chart as a reminder for next time. Also he told me that he will get a little shot to sedate him next time. Thats all. Ugh thats so rude. Anyways, good luck with her!