I also moved the food a little closer to the heat source to entice her since that was where she was spending most of her time. It took about 3-4 days before I even started telling people I thought she was going to pull through. But, I also was afraid I would jinx her if I said anything too soon...
Sounds like you are doing everything right. Unfortunately sometimes they are just weaker ones. I have a SS in my brooder now that had all the same symptoms as yours. I did sugar water for a quick fix and got the sav-a-chick probiotic and electrolyte mix and mixed both in the water. She just...