 In later years, she played bit parts in Scandinavian films.Her last film was "Pippi Långstrump" (Pippi Longstocking, 1949) directed by Per Gunvall, the first film adaptation of Astrid Lindgren's classic children’s novel, four years after its publication in Sweden.Pippi was played by the 26-year old Viveca Serlachius, and Mårtenson played a supporting role as Pia.