I Became the Heroine's Stepmother, and Who Said My Daughter Was a Jinx?

The Female Lead Is a Stepmother, and the Child Is Still Young

Historical or modern romance is fine. But!! No transmigration, transmigrating into a book, or golden fingers. I want the heroine to become a stepmother naturally and be good to the kids, with a good relationship with the male lead too. Or a marriage-first, love-later story where the male lead already has a child. The heroine should have sound values, and the male lead should be a good person.