My Stepsister Stole My Match? I Married a Duke and Became the Mistress of the House!

[Household Intrigue + Rebirth + Swapped Marriages and Remarriage + Becoming a Male Supporting Character's Mother + Face-Slapping a Transmigrator + Ten-Year Age Gap + Devoted Husband]

Bai Jinshu and her younger sister were reborn together. Her sister switched their marriage arrangements so she could marry a poor man.

On the wedding day, the groom made Bai Jinshu share her status as the heir's wife with a courtesan.

Rather than endure the humiliation, she married Song Heci, the heir's adoptive father.

From then on, everyone bet that Bai Jinshu would not survive three days.

They thought she would either be tormented to death by the ruthless old Duchess or waste away as a living widow in the Duke's mansion.

Later, people heard that Duke Song Heci humbly helped Bai Jinshu, her belly swollen with child, out of the mansion.

Bai Jinshu had not only survived, but also become the mistress of the Duke's household and received an imperial title from the emperor.

She went on to live a prosperous, glorious life, with all the authority and prestige she could want.