Okay well she seems much better with the heat on the porch, though I wouldn't say OK at all. We will keep an eye on her. Glad we didn't integrate her with the new chickens, though of course they have been exposed because they are in her coop.
The bigger problem now is the infestation on the sunporch, which is our access to the backyard. The cats run through there and bring them in I think. Will heavy freeze kill these suckers once she has been transferred out or whatever happens with her? We have a lot of the kids' toys on the porch...
I agree giving her a boost with nutri-drench and or some high protein food would be good. It certainly can't hurt.
I try to go as natural as I can but it doesn't always work. You have to do what works for you.