Wasn't I the Female Lead of a Regret Novel?

Vendia Rose is confident that her life follows the tropes of a "regret" romance novel, where her husband will naturally beg for her forgiveness and become obsessed with her the moment she demands a divorce. However, her plan backfires completely when her husband genuinely agrees to the divorce without any hesitation.Left in a state of shock and confusion, Vendia moves to the Rims estate to live a peaceful life as a landlord using the alimony from her ex-husband. Instead, she finds herself dealing with bizarre tenants, an incompetent and suspicious caretaker, and a murder mystery in her own mansion. Just as she thinks she has hit rock bottom, her ex-husband, Denros Kalvermer, reappears before her.