Daughter of the Reich by Louise Fein

Set in 1930s Leipzig, Hetty Heinemann is a loyal member of the League of German Girls whose world is turned upside down when she falls in love with a Jewish childhood friend. As the Nazi regime tightens its grip and anti-Semitism escalates, she must make dangerous choices between loyalty to her family, her country, and her heart. This gripping historical novel explores love, courage, and resistance in the shadow of tyranny.