A Wicked Tale of Cinderella’s Stepmom (2020)

Blurb:
We all know the fairytale: the glass slipper, the not-so-pretty stepsisters, and a night with the prince until the clock strikes midnight. I have been reincarnated into that classic story, not as Cinderella, but as her “wicked” stepmother! Widowed twice by age 37 and with three daughters, my goal is to make sure all will have suitable partners and their own happily ever afters … and maybe a nice future for me as well! But who is this handsome young baron that keeps approaching me?

Source: www.anisearch.com/manga/57203