Fairy Lin from France narrates her lifelong rivalry with her older sister, Siena, who she perceives as evil despite her angelic appearance. Siena often got away with misdeeds, including destroying Lin's toys and blaming Lin for her own actions, leading to Lin being punished. Their parents favored Siena, who was popular and received the best gifts. An incident at a Christmas dinner where Lin was humiliated by Siena led to Lin befriending a new girl, Bianca, who encouraged Lin to stand up to Siena. Lin's revenge included exposing Siena's mean diary entries at a party, which led to a fallout with Bianca. Lin then tried to emulate Siena by dressing up and befriending her friends, which caused more tension. Eventually, Lin realized she didn't like the person she was becoming and reconciled with Siena after an altercation with a boy both were interested in. The story ends with Lin and Bianca reconciling and acknowledging their feelings for each other.
Here are the key facts extracted from the text:
1. The narrator, Fairy Lin, has an older sister named Siena.
2. Siena is described as beautiful with blonde curls and blue eyes.
3. Siena and Fairy Lin have a strained relationship, with Fairy Lin feeling overshadowed by Siena.
4. Fairy Lin's parents favor Siena over her.
5. Fairy Lin meets a new friend, Bianca, who recently moved into their neighborhood.
6. Bianca and Fairy Lin become fast friends.
7. Siena moves to high school, and Fairy Lin is forced to join the same school.
8. Siena warns Fairy Lin to stay away from her friends and the boy she likes, Simon.
9. Fairy Lin reads Siena's diary and discovers that Siena has been writing cruel things about her friends.
10. Fairy Lin exposes Siena's diary at a birthday party, causing a scene.
11. Siena's friends turn on her, and Fairy Lin starts dating Siena's old friends.
12. Simon, the boy Siena liked, asks Fairy Lin out on a date.
13. Bianca is upset with Fairy Lin for dating Simon and tells her she's changed.
14. Fairy Lin's date with Simon is ruined when Siena shows up and kisses him.
15. Simon defends Fairy Lin and tells Siena off, punching her in the face.
16. Fairy Lin apologizes to Siena and suggests they put their differences aside.
17. Bianca reveals that she has feelings for Fairy Lin.
18. Fairy Lin is shocked and happy about Bianca's confession, and they share a romantic moment.