The internal medicine specialist called this morning!
When I talked to them last night, her creatinine was down to 1.7, her platelets were low normal, and her bilirubin was down from a high of 8.5 to 6.9 so liver function was slowly improving. She was walking pretty confidently and tried to take the nurse out the front door instead of going back inside. They were able to drain the infected fluid pocket at her elbow and her leg is back down to muscles and tendons and not a water balloon. Last night was the first time I heard the internal medicine doc say she was happy (multiple times!) with results and her progress.
This morning, her creatinine is normal and her platelets are low normal. Bilirubin is 3.7 (other liver enzymes still elevated) but they like the trend. She ate enthusiastically for them without harassment or even stopping to sniff, and also took cheese and little chicken sausage treats from me when I visited just now. I don't want to get my hopes up, but she's bright and attentive, getting a little cranky about strangers again, and the specialist thinks if she continues like this she can come home tomorrow afternoon and continue care at home instead of in the ICU.
Contemplating whether she can get at the bag of chicken sausages without getting out of her nice warm blanket cocoon.
CHOMP