Siren's Pact: My Pirate Queen

Princess Genevieve is drugged by her fiancé and sold to pirates. Rescued by Captain Maeve, they fall in love. To save Maeve, Genevieve trades her royal blood to a sea witch for storm powers—becoming the Storm Queen, but slowly freezing her soul. In the final battle, they take back the capital, execute Sterling, and Maeve's true love's kiss breaks the curse.