What Became of the Tyrant After the Pregnant Empress Left (completed)

Ysaris, the princess of a small country, was forced to marry the Emperor who killed her fiancé to save her homeland. Living as a 'spoil of war' in a bed shared with an enemy, she endures unnatural obsession, cold treatment, and blatant disregard. However, after overhearing her husband suggest it might be better to kill her than to have an heir by her, Ysaris decides she must run away for the sake of her unborn child.