His Discarded Wife, The Desired Duchess

Seraphina was once a powerful mage and mercenary commander. To repay Arthur, the Earl who saved her life, she gave up everything and married him. She helped to suppress his curse, fund his family, and tolerated his mother Margaret's humiliation. But three years later, when his first love Ella returns, Arthur immediately dumped her. They all mocked her, but Arthur's curse soon broke out, and they lost their fortune and title. When Arthur lied in the snow, Seraphina accepted the proposal from Cedric, a duke. She didn't look back at him.