Antibiotics such as Tylan, erthryomycin, and oxytetracycline can help to alleviate the symptoms of respiratory disease, but they can come back again whenever the chicken is stressed. I hope she starts to feel better soon. You might want to place her water higher up on a block to keep the shavings out of it. A heavier waterer might not tip over if she perches on it (been there, done that, LOL.)