Olivia's Diary: The Framed Villainess

"History is written by the victors." The truth of saying is definitely prevalent throughout all of human history.
But what about fiction? Is history also written by the victor there?
What dirty little secrets is our MC(main character) hiding from us that somehow enables things to work in their favor?
These are the questions our MC Olivia never thought she would be asking. She's read a lot of Reincarnation/Transmigration stories, and had always fantasized about what she would do if it happened to her. But now Olivia was regretting all of this. She didn't want to transmigrate. She especially didn't want to transmigrate as the villain of the story she just read. She hated the villain in the story. But was the story she read how it really happened?
Waking up after transmigrating to the Novel Graciella's Dark Days, she realized that this novel was not at all like it was written. She was the Villainess. She had a history of setting up the heroine, then a bad marriage, and finally a bad downfall. When she read the novel originally she even cheered as it happened.
But now...
This was her in danger of having that downfall. She found the Vilainess's Diary, but something was off. Why do these diary's contain events that never happened in the novel? Also, many of these events haven't happened yet?
Why in the diary was Olivia being framed and mistreated by everyone around her?
She had to get out of this horror story!

Note: This story will be published in Volumes. Each Volume will have around 20 Chapters. I will only publish the volume when I have finished writing them