Those who save us
by Jenna Blum

Although this is quite a thick book it was so compelling I devoured it in 24 hours. The narrative switches between the wartime years in Germany and the USA in the 90s where the main characters settled with a GI husband after 1945. Key characters are Trudy and her mother, Anna, who has never talked about what she endured to survive in Nazi Germany. It's only through a university project Trudy is running examining how ordinary Germans lived through these extraordinary years that she finally learns the truth about her heritage. But her mother, who has learnt to hide the past, is silent to the end.