I am not the best on treating worms, but the green poop may mean she is starving. Is it little bits of bright green? Can you post a photo? Is her keel bone pronounced?
Are you absolutely sure she is drinking plenty of fluid? If you are certain she is hydrated, you need to get her eating. Sometimes sick chickens will find egg irresistible when they will eat nothing else. Can you offer her scrambled egg? I’ve given it raw, too, and they love it. Once she has a little appetite, you might try making a mash of her pelleted or crumbled feed mixed with warm water until it’s oatmeal consistency and see if she’ll eat that.