Shout-Out: The Stars Are Legion by Kameron Hurley

On the outer rim of the universe, a galactic war has been waged for centuries upon hundreds of world-ships. But these worlds will continue to die through decay and constant war unless a desperate plan succeeds. Anat, leader of the Katazyrna world-ship and the most fearsome raiding force on the Outer Rim, wants peace. To do so she offers the hand of her daughter, Jayd, to her rival. Jayd has dreamed about leading her mother's armies to victory her whole life-but she has a unique ability, and that makes her leverage, not a leader. As Anat convinces her to spend the rest of her life wed to her family's greatest enemy, it is up to Jayd's sister Zan-with no stomach for war-to lead the cast off warriors she has banded together to victory and rescue Jayd. But the war does not go at all as planned.