One of my hens, Sunny, has always been a delicate little thing. It seems like every other week she needs a little boost, like extra vitamins, or antibiotics for a few days, but she always perks up after a day or two. Not so this time. We've had her on antibiotics and have been tube feeding her for a week because she will not eat on her own. Am I ultimately going to lose her? Is there anything else I should be doing for her?