The Male protagonist was forced to wear a Green Hat

She was born into a normal family; she enjoyed the warmth of a loving family. She went to public school most of her life, got into a good college to study computer science, and racked up hundreds of thousands of dollars in debt. She was unremarkable, mostly, she had one thing going for her; she had a pretty face. One that caught the attention of many men, so wealthy that her debt was just an insignificant number on them. So many of them tried to sweet-talk her with a promise of wealth and luxurious life, but she knew one thing in life and that is, promises of men are the most useless and shallow things in the world. She was ambitious and wasn't ready to put her future in men's hands. She worked as a programming analyst. In her opinion, she was not a good person, and she didn't intend to be one. Despite this, she had a younger sister and parents who loved her dearly. She worked tirelessly to pay off her debt and get a promotion that would allow her to enjoy all the luxuries she desired. The fates, however, played cruel tricks on her, and right as she was about to achieve her dreams, her kidneys failed, and worse still she passed away less than 24 hours before her surgery, losing any chance at life. Transmigrated, she becomes Ivy Hayden, the cannon fodder wife of the Male protagonist in a book her sister read to her right before her death. In the book, Ivy Hayden is a mere cannon fodder in a cliché story. She was an orphan, one from a poor background, a girl who struggled to get by, unremarkable except for her appearance, and the best friend of the heroine. She serves as a foil for the female lead. A stepping stone for the love of the male and female lead, destined to live her life in the female lead's shadow until her tragic death. Ivy, who transmigrated, took one look at the male lead rolling in bed with her cheap friend and happily went to a bar to celebrate her new life. There, she drunkenly picked up a handsome man and gave a green hat to the male protagonist. Since her cheap husband and friend are in love and together, she’ll kindly let them continue their loving relationship. As for her, she’ll enjoy spending the male lead’s money and make sure to live up to her role. After all, she should live up to her character setting; off-setting the purity of the female lead and helping them overcome the male lead mistake of marrying her. But can someone please tell her of all the people she could have slept with; why was it the uncle of the male lead and the villain of the story?