Since 2005 her work has been regularly featured in magazines such as Brigitte, DIE ZEIT, GEO, and Stern. In 2006 she finished her photography studies at the University of Applied Science in Bielefeld, Germany with the project AIDS in Odessa. The series received the 2007/2008 Documentary Photography Award from the Wüstenrot Foundation and the Museum Folkwang, and was exhibited at the Reiss-Engelhorn Museum in Mannheim, Germany and at CLAMPART in New York. Diefenbach has exhibited Land ohne Eltern throughout Germany and most recently at the Goethe-Institut San Francisco. Kehrer Verlag published a monograph of the Land ohne Eltern in 2012.