At the 2008 Olympic Games in Beijing, Arron competed in the 100 metres event. In her first round heat, she placed first in front of Lauryn Williams and Tahesia Harrigan in a time of 11.37 sec to advance to the second round. But in the second round, she failed to advance to the semi-finals as her time of 11.36 sec was only the fourth fastest time of her heat, behind Debbie Ferguson, Oludamola Osayomi and Vida Anim, causing her elimination from the event.