At the age of 14, de Rozario competed at the 2008 Beijing Paralympics and won a silver medal in the Women's 4x100 m T53/54 event as part of the Australian team. She also competed in the individual women's T54 100 m and 400 m events. She was coached by former Paralympic athlete Frank Ponta and is currently coached by Louise Sauvage. She did not win a medal at the 2012 London Paralympics. In 2012 and 2013, she won the Oz Day 10K Wheelchair Road Race.