Oatley was selected to represent Australia at the 2012 Summer Olympics in equestrian dressage. They were her debut Games. She rode Sandro Boy. Her 2012 selection was subject to scrutiny following allegations by Hayley Beresford, Australia's top ranked female dressage competitor, that there was bias by Equestrian Australia in the team selection process which Beresford charactertised as "blatant bias and double standards." She placed 9th with the Australian team in the team competition and 37th in the individual competition.