I just had a call.
They found no coccidia, not even one.
Though before the results came through she was given some sulphonamide antibiotics as a precaution. She has been getting subcutaneous fluids through the day as they have found rabbits often don't respond well to IV. The nurses have been successfully syringe feeding her and on one single occasion got 24ml into her, which is so so much more than I ever managed.
She responded well to the incubato, her temperature went back to normal and they then became concerned she was too hot. So she was moved to the main hospital area and her temperature went down again, so she was moved back to the incuabtor with a slightly lower temperature setting, and she is still in the incubator now.
The vet is quite concerned about her because of the lack of body temperature self regulation, and says she seems like quite a different animal to the one he saw yesterday afternoon.
I am sorry if I seem obsessed with factual details in these posts, but I do sometimes tend to shut down emotionally about my own stuff when there is something difficult going on. I get on with what needs to be done practically, but am still able to listen to others' emotional difficulties, and then my feelings will hit me at some point in the future when it is more possible to deal with them.