Following a three-year hiatus from the screen to focus on her personal life and family, Morton returned in 2012. She provided the voice of Sola in the science fiction film "John Carter", based on "A Princess of Mars", which received mixed reviews and flopped at the box office. She next played a chief of theory in the thriller "Cosmopolis", directed by David Cronenberg. Her role, described as "misjudged" by "The Guardian", earned her a nomination as Best Actress in a Canadian Film Award at the Vancouver Film Critics Circle. She also served as a jury member at the 69th Venice International Film Festival in 2012.