Get her to drink some chicken vitamins with electrolytes in her water. Most feed stores sell SaveAChick, Durvet, or Poultry NutriDrench. At that age, coccidiosis as well a s dehydration could be a problem. Symptoms of coccidiosis are lethargy, hunched posture, not eating, and diarrhea with mucus or blood in droppings. Corid or amprollium in the water is the best treatment for 5 days.