Permethrin garden dust is very good to treat mites or lice, used every 7 days at least twice. The coop, roosts, and nests must be treated as well, once bedding has been removed far away. Permethrin 10 concentrate sold at most feed stores can be mixed with water and used in a spray bottle or...
How old is she? Does she lay eggs? What have you treated the mites with? What does she eat? How does her crop feel—empty and flat, full, hard, doughy, or puffy? Does her crop fill empty by early morning? I would try to give her some Poultry NutriDrench 2 ml orally or similar electrolytes with...