too bad medical treatment is super expensive even for pets
and as harsh as it sounds, the cat is already getting old, so it would be best to put her down, especially when you consider the costs. my dog had something seriously wrong with him like a year ago that eventually killed him and there was nothing my dad would do besides put him down because treatment would've cost way too much.
I know, but if you have pet insurance, sometimes you are covered or these health expenses are partially covered. 8 years old isn't really old aged for a cat. Plenty of cats live longer than 15. Now that's old. If a pet is in deep pain though, and nothing can be done to stop it - then it is the pets time to be put down to rest. It's sad, but should only be done in certain circumstances.