HELP, looking for specific manhwa

Hello! I was wondering if anyone on here possibly knows the title of a manhwa I read a few years back. I recall it being a hetero story that started with some madam or duchess being on her death bed sick. I think her child or children were present in the room and she thought her husband wouldn’t get there on time because he was always on the battle field, anyway, he does make it back, and she asks him for a final request, he agrees and signs a document she presented him. The lady right before she dies is laughing or was super happy and rubs the divorce in his face, something like that and then she instantly dies but rather than reincarnate she apparently is sent back in time.

I would really appreciate it if someone could tell me the title, I’ve been wracking my head trying to remember and can’t for the life of me. I just know I laughed my lungs out with how she tricked her husband right on her death bed.