[6] Her parents spoke High German when she was young, her mother in memory of Vienna, her father because he preferred it to the Glarus dialect.

[9][10] In 1939 she wrote her first book, L'Appel du rêve, which was published five years later in 1944 under the pseudonym Danièle Marnan.

She wrote novels, autobiographical accounts, short stories and numerous radio plays.

From 1949 to 1952, Z'Graggen she worked as a secretary at the Rencontres Internationales de Genève and at the European Cultural Society in Venice.

[7][12] In Mémoire d'elles (1999) she used two letters discovered in her late mother's belongings to explore the life of her grandmother.

In 2015–2016, Frédéric Gonseth made a film about Z'Graggen's life, Une femme au volant de sa vie, which was nominated for the Audience Award at the Journées de Soleure 2017 and released in cinemas later that year.Translations from Italian Translations from German Archives littéraires suisses, Fonds: Yvette Z’Graggen.