MollyMC,

I am so sorry to hear of your kitty's illness. Please
TRY not to feel guilty. I know that's easier said than
done, but you are doing everything you possibly can
right now. There is a good online source of information
on this disease at http://vetinfo.com

It seems that there has been a lot of innovations in various
treatments for this. It does involve surgery in some cases.

Maybe checking this disease & treatments available at
the vetinfo site will give you more treatment choices.

Best of luck with your Beautiful Furkid. Liz.