You never know though, maybe they'll be able to find a cure for your cat. I just think you should hope for the very best.
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.