Austin made her own swimming history, as Seychelles' youngest ever athlete (aged 15), at the 2004 Summer Olympics in Athens, where she competed in the 100 m breaststroke. Swimming in heat one, she raced to third and forty-third overall in her lifetime best of 1:19.02, almost a full-second margin behind Armenia's Varduhi Avetisyan (0.15) and three-time Olympian and leader Katerine Moreno (0.67).