Cursebreaker by R.M. Gray

Cursebreaker is the thrilling finale of the Nightweaver trilogy. Seventeen-year-old pirate Aster Oberon sets sail with her family and friends to pursue the evil Queen Morana and stop the Underling army. Meanwhile, Morana is searching for three mythical treasures that could break the barrier between the heavens and their world. Torn between Will and Titus, Aster must navigate dangerous seas, betrayals, mythical creatures, and devastating discoveries while learning to embrace her true power.