In 2011, Cockburn did not compete in the Canadian National Championships and was sick for the Finals of the 2011 Pan American Games. In the 2011 Trampoline World Championships in Birmingham, England, Cockburn and MacLennan secured two places for Canadian women in the 2012 Summer Olympics and Cockburn won a Silver medal for the synchronised trampoline event (with MacLennan) and a Bronze medal for the Team competition.