Transmigrated as a Cannon-Fodder Stepmother

Transmigrate into a Book, Conquest, and Raising Kids

I'm looking for a romance novel where the female lead transmigrates into a book as the male lead's wife. Before she took over, the original wife treated her daughter and son badly. Later, she slowly wins over the children, then divorces the male lead and opens a dessert shop? I can't remember the title.