Harriet Hallowell's aunt Sara died in July 1924 and she inherited her aunt's estate. While not rich in cash, the estate had important works of art, with paintings by artists such as
Anders Zorn (1860–1920) and two works of sculpture that were made and gifts by
Auguste Rodin (1840–1917), her aunt's friend. She continued to paint and remained active with the Paris chapter of the
American Artists Professional League. She exhibited her work with the American Women's Club of Paris and at the annual Salon. Beginning in 1933, Hallowell experienced financial difficulties due to the devaluing of her French stocks and the
Depression, which became "desperate" during
World War II. As German troops in the area, she needed to move often to avoid them. She rejected offers from her relatives in the United States to leave France. Hallowell died in 1943 in her Moret home. ==Memberships and affiliations==