Give a half capsule of 500mg of vitamin E (don't need Selenium) u can give full the next day u see improvement and then continue 5 days . Once u see good improvement in 5 days u can moderate the dose . Also increase her diet which have vitamin E Selenium naturally one of my rooster walk backwards i.n his chick days I use this method and all neurological symptoms fade outIs your chick better with the vitamin E? I have a lav silkie chick doing exact same thing.