Resistance by Jennifer Nielsen
Chaya is only sixteen years old, but she’s already a seasoned warrior. As part of the Jewish Resistance in World War II, she has learned to smuggle, to lie, even to kill if needed to save her people. When a new girl, Esther, is added to her cell, Chaya doesn’t think she’s ready. And when their first mission together goes badly, she hopes the other girl will be sent away. But when the Nazis strike back against the Resistance, Chaya realizes she’ll have to accept any help she can get if she wants to continue her mission.
Recommended for fans of historical fiction and strong female characters in middle school and up.