Poor thing! I'm afraid that I can't offer any advice that hasn't been said, as I'm not an expert in chicken diseases, but I hope that your girl feels better soon.
Also, again, I don't know what that is, but please be careful with her and take care of yourself -- I know that it's a really obvious thing to say, but please be especially careful to not get any of the gunk in any cuts or anything like that on your hands. Those cuts can be sneaky and tiny, and all that.
Anyway, good luck with her. She's a toughie, it seems!