Sparrow's counts were well into kidney failure territory, but she also showed signs of dehydration, so the doc wanted to keep her overnight to replenish fluids, administer IV antibiotics, and retest her. I said sure, whipped out the plastic, and scratched Sparrow goodnight.
The next day the doc reported that Sparrow responded very well to the treatments, so they wanted to continue IV fluids/meds for another night. They sent an updated quote, and I closed my eyes and clicked "Yes." I dropped by at bedtime to keep Sparrow company for a bit. They gave us a room and Sparrow explored a bit, then asked for scritches, and then made herself comfortable in my lap. After about an hour she was asleep, so I gave her back to the vet and went home.
I picked her up in the morning and paid the final tab: $4k. That was gonna be our trip to Montreal for the grand prix next spring but whatever.