 After completing the season with Paris-Saint Germain, she joined the Thorns in July 2013, helping them attain a third-place finish in the NWSL.The Thorns won the 2013 NWSL Championship after defeating the Western New York Flash 2–0, with Heath scoring the game-winning goal from a direct free kick.She was voted as the Most Valuable Player (MVP) of the championship game.