Roos van Gelder/The Anne Frank HouseMargot Frank, right, laughing with a friend from her rowing team. Amsterdam, 1941.

In a diary entry from October 1942, Anne Frank describes lying in bed with her sister, Margot Frank, and talking about their diaries. Margot asks if she can read Anne’s; Anne says she can read parts of it, and Margot agrees to let Anne read her own diary as well. But while Anne’s diary was preserved and published after their deaths in 1945, Margot’s was lost.

As such, Margot Frank can be a difficult figure to understand. Whereas Anne’s diary entries provide a vivid and moving account of their family’s experience during the Holocaust, Margot’s words, observations, and impressions have largely been lost to time.

That said, Margot Frank’s friends and family kept her memory alive after she died alongside her sister at the Bergen-Belsen concentration camp.

This is her story.

Anne Frank HouseMargot Frank and Anne Frank in Germany. 1933.

Margot Frank was born on February 16, 1926, in Frankfurt, Germany, the first child of Otto and Edith Frank. The Anne Frank House notes that Margot was described as “neat and careful” from a young age, and that her first school report lauded her as “very diligent!”