Bartholomew represented Grenada at the 2008 Summer Olympics in Beijing, where she competed for the women's 400 metres. She ran in the sixth heat against seven other athletes, including Jamaica's Novlene Williams and Great Britain's Nicola Sanders, both of whom were heavy favorites in this event. She finished the race in fifth place by one hundredth of a second (0.01) behind Kineke Alexander of St. Vincent and the Grenadines, with a time of 52.88 seconds. Bartholomew, however, failed to advance into the semi-finals, as she placed thirty-third overall, and was ranked below three mandatory slots for the next round. She also tied her overall preliminary position with India's Mandeep Kaur.