To date nothing is known about the first twenty years of Krüger’s life. From 1905 onwards Krüger (née Bürger) lived in Uerdingen, from circa 1912 to 1914 in Moscow. After the outbreak of World War I, she returned to Germany with her family, initially living in Cologne and Leverkusen, then settling in Frankfurt in 1926. Here she studied with Max Beckmann in his master studio at the new School of Arts and Crafts. Starting in 1935, she had her own studio at the Städel, but rarely exhibited. Only very few of Krüger’s works are still in existence today, as the majority were destroyed during World War II. Under National Socialism, Krüger adopted a stance that was at best contradictory. Her family was sympathetic with the regime, but she retained her modern painting style, which met with the disapproval of the new authorities.