Kramer took singing lessons with and acting lessons with in the Method.
At 26, she went to the in Munich and completed her training as an actress.
She worked as a shop window designer, made portraits of tourists in , and applied to fashion school without success.
In 2005, she published the children's book Matilda - Oder die aus dem Haus ohne Fenster Matilda - Or the House Without Windows , with a sequel, Neues von Matilda, dem Mädchen aus dem Haus ohne Fenster News From Matilda, the Girl From the House Without Windows , in 2014.
In 2008, Stefan Loeffler wrote a biography of Kramer titled Ann-Kathrin Kramer - Begegnungen Ann-Kathrin Kramer - Encounters.