This debate continued, with many male colleagues taking the position that women should only sculpt children's portraits or small pieces that depicted femininity, when in 1928, Fridman proposed her "Centaur" statue. Fridman's work "Centaur" became her most noted piece. Completed in 1939, angry controversy surrounded it as well, with many complaining that the figure was not culturally sensitive as centaurs were not part of the national folklore. The statue, in bronze is unadorned and reflects the power of the creature in its strong composition. Though initially Fridman intended the sculpture to be displayed at the beginning of Library Street, it was installed on the hill near the observatory in Observatorielunden in Stockholm. In 1948, Johanson published a book in defense of Fridman and other women artists, "Sigrid Fridman—och andra konstnärer: en krigskrönika" ("Sigrid Fridman—and other artists: a war chronicle"). Fridman's statue of Ellen Key (1953) was also the subject of fierce debate, and as the artist aged, she became more introverted, though she continued to work. Various pieces of her sculpture are scattered throughout the country in public spaces, such as variant centaurs in Örebro and Bollnäs, a figure of Pan with pipes in Härlanda and a fountain in the garden of near Visby in Gotland. Her last work, "Det droppande trädet" (The Dripping Tree) is located in Odengatan near the City Library and was installed the year after her death. Fridman died 8 January 1963 in Stockholm County, Sweden.