It was an Intel International Science & Engineering Fair.
Her senior high school project research involved free radicals in antioxidants, which may have reduced degenerative illnesses induced by oxidative stress.
My impression is she is a good short study, able to memorize and speak to studies performed by others giving the appearance of her own derivation. In Texas, we used to call that fraud. Back east above the Mason-Dixon, they call that entrepreneurial genius.
That is why I always interviewed science fair contestants in more detail than their prepared speech. Follow up questions are key. Well over 50% of those with nearly professional-quality sign boards and great superficial explanations of their results had no idea what they were talking about. I'm an MIT graduate with a good foundation in the sciences but not an expert in any of them; I'm a math person. When I know far more about the science than the specialist who is presenting, I become curious about whose work I am seeing.