Have you tried coaxing her to feed with a garlic supplement to dip the food in? I've also had some decent amount of luck using frozen peas (1 or 2) to get my blue tang to eat. It works as a natural laxative on fish it seems.
I crushed some garlic today and rubbed some flake in it no luck. I'll go to lfs tomorrow and get some garlic supplement , do you just drop the peas in or crush them up first? I'd like to try that also.
I usually haven't had to crush the pea. The fish usually went for it. I've only had to do this with finicky tangs. Everything else ate frozen mysis, pellets, flakes, or homemade food pretty quickly.
I keep all my new fish in a small in-tank breeder net and make sure they accept food for a few days before I introduce them to my DT. I've got a 125g and it's a pain to find a fish I know isn't eating.