She's still at the vet's, still getting rehydrated. They're going to try an appetite stimulant. Her kidneys are working fine, and there's just nothing in her bloodwork to explain why she's not rallying.

I spent some time with her today, petting her gently and asking her to just let me know somehow whether she has the strength to pull out of this or whether there's some undetected bad problem that is making her want to let go.