A Jewish woman who takes refuge in the Beje. Mary’s presence is especially risky, as she has asthma and can be heard wheezing even inside the secret room; however, the family and the other fugitives unanimously vote to give her a place in the house. After Corrie’s arrest, Mary escapes the house with Rolf’s help, but is eventually arrested while walking down the street; no one is able to find out why she risked going outside or what happens to her.