Diebold was born Laure Mutschler in Erstein to a French patriot family on 10 January 1915. She spent her childhood in Sainte-Marie-aux-Mines where her parents lived from the year 1922. At the end of her studies, just before World War II, she became an administrative assistant in the "Etablissements Baumgartner". In 1940, Mutschler integrated the resistance network "A.V." of Dr. Bareiss in the annexed Alsace, and, at the same time, became a special agent under the name "Mado" in another resistance network known as "Mithidate". Her secret job led her to host in her home in Alsace escaped war prisoners before helping them to escape to France; but just before Christmas 1941, she had to leave Alsace secretly. She went to Lyon in the free south of France hidden in a locomotive. There, she worked as an administrative assistant in the service which works with refugees from Alsace; and from 1942, she collected information for her resistance network "Mithidate" before encoding them and sending them to London by post mail. On January 31, 1942, Mutschler was married to Eugène Diebold, who also escaped to Lyon. In July 1942 she was arrested with her husband, but they were released by the Gestapo. They moved to Aix-les-Bains where Mutschler became known only as "Mona". In September 1942 she was promoted to the rank of Lieutenant of the Free French Forces. She was assigned to the position of private secretary of Jean Moulin. After the arrest of Jean Moulin in 1943, she was sent to Paris to be the secretary of Georges Bidault. She was arrested again on 23 November 1943 with her husband and sent to Fresnes Prison. She was not tortured because she convinced her Nazi captors that she was just a secretary and not a major figure in the resistance network. Nevertheless, she was sent to the Nazi camp of Schirmeck and between January 1944 and her liberation in April 1945 she was transferred to Auschwitz, Ravensbrück and Buchenwald. Diebold died suddenly on 17 October 1965 in Lyon and, in accordance with her last wishes, she was buried in her childhood place Sainte-Marie-aux-Mines in Alsace. Today a street in Lyon and a square in Sainte-Marie-aux-Mines are named in her honour.
