Just got a call from the vet. The bloodwork shows that Amelia probably has hepatic lipidosis. Fortunately, FIV and FeLV are ruled out.
Since the liver is screwed up, she has a lot of toxins in her blood, including but not limited to bilirubin. In addition to antibiotics, the vet is also administering a drug to help work that junk out of her blood.
Amelia’s biggest problem is a lack of appetite. Unless she starts eating soon, there will be no other available options besides unacceptably expensive interventions like tube feeding directly into the stomach.
The vet was not able to change the 50/50 prognosis yet since he does not have a firm diagnosis.