Courtot became a child model and in June 1912, while not yet fifteen years old, joined the
Kalem Company, appearing in 1913's
The Riddle of the Tin Soldier alongside star
Alice Joyce and
Harry F. Millarde, who was making his film debut. Between then and 1916, Courtot made 37 films for Kalem, playing the starring role in
The Ventures of Marguerite, a 16-episode action/adventure
serial. Following the Kalem Company's merger with
Vitagraph Studios, Courtot starred in the
Gaumont Pictures production of
The Dead Alive, directed by Henri J. Vernot. After several films with
Jesse L. Lasky's Famous Players Film Company and smaller independents, Courtot took most of 1918 off to use her public persona to tour the country to promote America's
World War I effort in Europe. When the war ended, she returned to film, joining
Pathé. Although she had starring roles, she also worked in prominent secondary parts such as in the 1921 serials
The Sky Ranger, starring
June Caprice, and
The Yellow Arm, starring
Juanita Hansen. ==Marriage and retirement==