Villainous PrincessUpdating

One day I transmigrated into the body of Violet, the villainess character of the novel "For Shannon." Violet had a beautiful face, wealth, and was even a princess! She was a woman who had almost everything. Her life was ruined when she chased after the one thing she didn't have - love. Now that I'm her, I can change her fate because I don't need love! ... But why have the characters of the novel started to change ever since I decided that?