I Was Reborn and Married Off to Become the Household Matriarch? What a Deal!

[Both reborn + the daily life of a household matriarch + a female side character transmigrates into a book + devoted to each other] He Miaoyi and her younger half-sister were both reborn. In their previous life, their stepmother feared He Miaoyi might marry well, so she hurriedly found her a poor scholar with nothing but a widowed mother to his name. Meanwhile, she married her own daughter into a marquis's household to become its matriarch. Who could have guessed that the poor scholar was so capable? In less than two years, he became the youngest chief councilor in the court, and He Miaoyi became the wife of a man of boundless prestige. Her half-sister, who married into the marquis's household, was in for a nasty surprise as soon as she arrived. The heir was a dissolute playboy, and before taking a proper wife, he had already kept a concubine who had borne him a son. The moment she entered the household, her half-sister gained a stepson for free and was promoted to stepmother. Neither the concubine nor the boy was easy to deal with. The half-sister fought with the concubine day in and day out, earning her mother-in-law's dislike and her husband's indifference. Eventually, unable to bear the loneliness, she seduced the Second Prince and was forced to drink a cup of poisoned wine. Reborn, they returned to a small matchmaking gathering. Her half-sister made the first move and chose the poor scholar, dreaming of becoming the chief councilor's wife. Go ahead and take him. In time, she'll learn that the only reason that poor scholar became chief councilor was that He Miaoyi helped him plan his rise. This time, He Miaoyi married into the marquis's household, kept her distance from men, and focused on making money. Life couldn't have been more comfortable. Her half-sister, who had taken the marriage she wanted, waited and waited, but the chief councilor's wife she dreamed of becoming never materialized. Instead, she was sent with the poor scholar to Qingzhou and nearly lost her life.