The Queen Who Quit

Seraphina Sullivan transmigrates, becomes Empress. 40 years with Emperor Alistair Quinn, he takes Livia. Seraphina returns to modern era (40 ancient years = 1 modern month). Plague by Rhys Quinn, daughter Willow struggles. Seraphina returns with Forrest Vance. Uncovers truth, punishes Rhys Quinn/Livia, deposes Alistair, supports Willow as Princess Regent. Willow stays. Seraphina returns with Forrest Vance, marries him. Gives birth to daughter with Willow's birthmark.