 In 2003, she became the senior national all-around champion, as well as the Elite Canada champion on the uneven bars and balance beam.She was a member of the Canadian teams at the 2003 World Championships and at the 2002 and 2003 Pan American Games.In 2004, Mackie was named to the Canadian team for the Olympic Games in Athens, along with Melanie Banville, Amelie Plante, Heather Purnell, Kate Richardson, and Kylie Stone.