Can you help me find a book? Basically, the FMC secretly dates MMC (both in mafia) for a few years. Fake cheating pics sent to MMC break them up. He marries her sister (sister had a crush on him while FMC and MMC were dating, but didn’t tell him that) as revenge and has a daughter. FMC is traumatized, cuts off her tattoo (given by MMC to show his “love”) with a blade, disappears, and builds her own mafia. I don’t remember a lot after that, but I know after a couple years the FMC comes back “home” and as she walks in her guards bow to her in respect, surprising the other people. Also, she plays-fights with her brother.