Her eye in the picture has the sunken look of conjunctivitis (pinkeye) which may be mycoplasma or MG. With her paralysis and the loss of the one before with one paralyzed leg, may be Mareks disease, but a necropsy by your state vet could give more clues. Sorry that she is not improving, and that you have decided to put her down. What state are you in? If you keep the body cold and contact your state vet in early morning, they will tell you the best way to get a necropsy. Many will send you a shipping label for overnight shipping, on M-F, but you can take it in as well.