How did you go downhill so fast? This time last week you were happily explopring furniture, complaining about rain and bullying your sister. Since then you've had two overnights at the vet for IV fluids, eaten nothing for four days, and after your emergency readmission yesterday, might be facing surgery this morning depending on X-ray results.
Waiting on the vet's call is not fun. Please be Ok.
P.S. You need to come home soon: your sister has noticed the absence and she's measuring the cat tree for new curtains.