Kill The Empress (Reincarnated as the villainess)

If you like these types of stories then this should be a fun read.
One day you were reading your favorite novel with your best friend, but the next thing you know, you've collapsed on the ground, coughing up blood. The last thing you remember is looking up and meeting your friend's menacing gaze as she stared down at your convulsing body.
You suddenly wake up and realize that you are now Duchess Edith Thornwood, the villainess of your novel that will suffer a terrible fate by the hands of your husband, the male lead. Naturally you want to change the story by being a charming and nice person as to not get killed, but what if your husband is insufferable, and the female lead looks suspiciously identical to your old best friend?