Crown of Vengeance Ep. 4

In her past life, she was betrayed by her mother and sister, who conspired against her. Her newborn baby was swapped with her sister’s stillborn child, leading to her disgrace and a tragic death at home. Her husband was also framed by her sister and ended up dying as well. After being reborn, she uses her memories from her previous life to expose her mother and sister's schemes, ultimately helping her husband rise to power.