Eckstein stayed in Switzerland from March to September 1933, and then returned to Coburg.[4] In order to maintain awareness of the Kellogg–Briand Pact, she continued writing letters, and in 1942, she attempted to publish a manuscript titled "The Will to Power Harmonized", but the Reich Ministry of Public Enlightenment and Propaganda, under Goebbels, denied her permission.[4][13] She died on 16 October 1947 at her home in Coburg.[4]