Lewellen was born in Palos Park, Illinois. In 1996 she won her first medal which was silver for her participation in wheelchair tennis at Paralympic Games, Atlanta, Georgia. Four years, in Sydney, Australia she became quarterfinalist in the same sport. In 2004, she won a bronze medal in Paralympic Games in Athens, Greece. Four years later she was awarded another bronze medal, this time for her participation in World Organization Volleyball for Disabled Intercontinental Cup in Ismaïlia, Egypt. The same year she won a silver medal in Women's Sitting Volleyball at the 2008 Summer Paralympics in Beijing, China.