Mildred had the personalty traits of extraversion and conscientiousness. She was extremely loyal to her husband and to the things he loved. She was persistant and had deeply held convictions which she had no problem with taking action based on those convictions.
Greta had the personalty traits of openness, agreeableness and also conscientiousness. She earned her degree with hard work and was grateful for what she had. She had compassion for the less fortunate and early on resolved to make other people's lives better in whatever way she could, including her son Ule. Her love for the arts helped her in her fight against the Nazis.
Martha had the personalty traits of openness and extraversion. She was very impulsive and outspoken, at first praising the Nationalist Socialist movement, comparing it to the American Revolution. When she finally realized what was going on she used her talents as a socialite to help the resistance.
Sara was a fictional character in the book; a composite of several women. This character had the personalty traits of agreeableness and conscientiousness. Sara was brave and idealistic and wasn't afraid to take risks. At first she ignored the swastikas but when storm troopers starting destroying Jewish property and businesses, she became terrified. Her fear and bravery allowed her to help out in whatever ways she could.
They were all remarkable women with a conscientious trait and determination to do whatever they could to help end the vicious takeover of their beloved Germany by Hitler and his regime.