Help!!!

I am looking for the title of this manhwa, it's ongoing and has an isekai-vibes.

The female lead has a red hair and at first she married the duke with a contract so they're not actually in love so they divorced eventually. Then this duke have a son (blonde male lead) when he knew about the divorce he straight up ate his then step-mom (the red haired fl) and that's all I've read about it.

I've been looking for it for hours ╥﹏╥