Matrix by Lauren Groff

Seventeen-year-old Marie, too wild for courtly life, is thrown to the dogs one winter morning, expelled from the royal court to become the prioress of an abbey. Marie is strange - tall, a giantess, her elbows and knees stick out, ungainly. At first taken aback by life at the abbey, Marie finds purpose and passion among her mercurial sisters. Yet she deeply misses her secret lover Cecily and queen Eleanor. Born last in a long line of women warriors and crusaders, women who flew across the countryside with their sword fighting and dagger work, Marie decides to chart a bold new course for the women she now leads and protects. She will bring herself, and her sisters, out of the darkness, into riches and power.