Hassan was originally interested in association football before deciding to take up track and field athletics. Despite a lack of training opportunities and facilities, she was given the opportunity to participate in the 2014 Summer Youth Olympics but, since South Sudan was not yet a member of the International Olympic Committee, she competed as an Individual Olympic Athlete. She took part in the 400 m, but did not win a medal. She also attended the 2016 African Championships in Athletics, where she was eliminated in the heats of the 200 m event. For the 2016 Summer Games, she was again entered in the women's 200 m, where she was placed in heat four. This heat contained eventual gold medal-winner Elaine Thompson of Jamaica, although it was won by the Ivory Coast's Marie-Josée Ta Lou. Hassan finished eighth and last, although she set a new personal best of 26.99.