She was an all-American in her freshman year and made the Southeastern Conference’s honor roll as a sophomore majoring in interdisciplinary studies. Ahead of the start of her junior season, Dunne is also at the leading edge of a movement shaking the old foundations of college sports: a female student athlete raking in cash thanks to the passage in 2021 of new rules allowing college athletes to sign name, image and likeness, or N.I.L., deals.