"Cholangitis is the medical term given for inflammation of the bile ducts and intrahepatic ducts -- the ducts that carry bile out of the liver. Bile, an essential component in the digestive process, begins in the liver and is then stored in the gallbladder until a meal is taken. The bitter fluid is then released into the cat's small intestine, where it emulsifies fats in the food to be used as energy by the rest of the body."
Rory wi'll be staying at the vet's until at least Monday. Hopefully, she'll be doing well enough by then to come home. There's a possibility they'll want to do an ultrasound if her progress isn't as good as they hope.
Antibiotics, fluids, pain meds, she's under supervision at this point and in good hands.