Got the results back from the rabies test: sweet kitty was negative. The vet who examined her believed that she was suffering from something else neurological...perhaps FIV, FeLV, or toxoplasmosis...all things that a properly vaccinated, indoor cat is essentially immune from. Toxoplasmosis is a parasite and can prove dangerous to humans, too (particularly in-utero, but also to full-fleged Humans). No vaccine for that, but indoor cats aren't really at risk for carrying the parasite or transmitting it.

While I am relieved to not have to deal with the series of shots, I am still very sad that an innocent animal had to endure such a horrible last day of life. And our cash-strapped humane society has to foot an irresponsible person's vet bill.