Must be very frustrating. We did have an indoor-outdoor cat once who went through a period of "general malaise" that lasted almost a month. And then she got better and went back to normal. The vet could find nothing, but suggested that Raddish had possibly been drinking from puddles and streamlets downhill from someone who had been fertilizing their garden for spring... not enough toxins to really hit her kidneys or cause an infection, but enough that she felt perpetually poorly. As the dry season kicked in those water sources dried up and she felt better... it was a theory, but we could never truly know.
Hope Ms P gets better soon!
=^..^=
Thank you! I have been considering some kind of contamination or poisoning. I can see that she feels nauseous but we can't figure out why. I was expecting her liver to show signs of strain as Yoda's has but nothing abnormal there