Danielle Graf is a legal economist. She has two children and works in organisational development in her home town of Wandlitz.
Katja Seide is a special needs teacher. She lives in Berlin, has three children and works at a primary school in Brandenburg.
Together, Danielle Graf and Katja Seide write the blog, "The child I wanted so badly is driving me crazy" (www.gewuenschtestes-wunschkind.de), which has had over 35 million hits. Their books have been translated into many languages.