Dagmar was born on October 3, 1943, in Humenne, now part of Slovakia. Her mother, Irene, worked as a milliner, and her father, Zoltan, was an accountant for a lumber yard. She has an older sister named Monica and a younger brother named George.
In 1944, the Nazis came to Humenne. Both sets of Dagmar’s grandparents were taken and put on a train bound for concentration camps.