Millu was raised by her grandparents, and has spent most of her life in Genoa.She worked as a journalist for il Telegrafo and schoolteacher and joined the Italian partisans in 1943.She was arrested in 1944 and deported to Auschwitz-Birkenau.After the war she returned to Italy became a book author.Her work is included in the Italian anthology, Twentieth-Century Ligurian Writers.