The Theatrical Mother-in-Law and Daughter-in-Law of a Period Novel

In her previous life, Zhao Xiaoan worked diligently and tirelessly as a daughter-in-law in the Meng family, only to find that it had all been for nothing. The Mengs schemed against her until she died in the cold of winter. Given another chance, she is determined to make the Meng family pay for their blood debt. But then everything takes an unexpected turn: why has her once-acid-tongued mother-in-law changed?