I believe her. The drug she had in her system was an ANTI-androgen, meaning it's an anti-male-hormone drug...probably from taking spiranolactone, which is basically the only treatment for polycystic ovarian syndrome. I really doubt an anti-male-hormone would enhance her performance (since males are usually the better athletes), so there would be no reason to take it for performance.
My horse is subject to random drug tests, and attempting to go through ingredients and determine if something is legal or not is a total pain in the rear.
I totally believe her, and while she may have been dumb and not thoroughly researched... she may have tried to be diligent and just missed it.
ETA: Asking "the powers that be" usually gets you someone in a lower level administrative desk who has no real training on all the details of what's involved. You pretty much need a pharmacological expert who knows not only ingredients but how your body processes those to be 100% sure of everything being legal.
The pews never miss a sermon but that doesn't get them one step closer to Heaven.