If she has scaley leg mites then I would soak her feet and legs in somekind of oil[olive oil maybe] that will suffocate the mites and also help to soften up the hard areas and maybe her toes will start working again, there was a lady on her awhile back who helped alot of chickens through scaley leg mites her BYC name is Welsharon you might give her a PM and get advise from her. I hope this little one gets through this and bless you for staying at it and trying to help her. the reason you won't see the mites on her legs is because the mites burrow under the scales that line their legs it says in my book to use mineral oil or a mixture of kerosine and linseed oil. also Ivermectin is also used. this is not contagious to humans.