At the 2004 Summer Olympics in Athens, Vrolijk was elected by the Aruban Olympic Committee to become the nation's first ever female flag bearer in the opening ceremony. She qualified again for the 50 m freestyle by receiving a Universality place from FINA, in an entry time of 28.13. Swimming in heat four, she raced to a third spot by three hundredths of a second (0.03) behind Moldova's Maria Tregubova in 28.43. Vrolijk failed to advance into the semifinals, as she placed forty-ninth overall out of 75 swimmers on the last day of preliminaries.