Protector Of The Small by Tamora Pierce

A determined young woman insists on training to become a knight despite entrenched prejudice and the expectations of a society unaccustomed to female fighters; she endures hazing and hostile peers, hones her skills through rigorous training, and grows into a courageous, principled protector who defends the vulnerable—especially children—uncovers threats and injustices, and proves that honor, compassion, and perseverance define true knighthood.

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