I apologize for the lengthy summary, but here's a concise summary of the provided text:
Katie, a girl with a scar on her back, lives with her aunt, who treats her poorly. When Katie's biological father suddenly appears, it turns out that Katie comes from a wealthy family. She moves in with her rich dad and stepmother Mary, who initially seems caring but later reveals a darker side. Katie becomes friends with Veronica but discovers her cruelty. Mary may have betrayed Katie to Veronica. After an incident at school, Veronica is expelled. Later, Mary comforts Katie and expresses genuine love and regret for her past actions.
1. The speaker is a girl named Katie from New York who was living with her aunt and cousin Lucy after her parents had an accident when she was a baby. [Source: Document 1]
2. Lucy had a large room filled with toys and books, and another room that was used as a closet. [Source: Document 1]
3. Katie lived in the attic and had to use hand-me-downs. [Source: Document 1]
4. Katie's aunt loved her more than she did, and Katie would do anything to be loved like Lucy. [Source: Document 1]
5. Katie's parents are rich and had gotten divorced before Katie was born. [Source: Document 2]
6. Katie's dad tracked her down and showed up at her aunt's house with two bodyguards and a wealthy-looking man. [Source: Document 2]
7. The man turned out to be Katie's dad, who had remarried and was now living in a mansion in New York. [Source: Document 2]
8. Katie attended a new school and quickly became friends with a girl named Veronica. [Source: Document 2]
9. Veronica and her friends were mean to other kids, including Katie, who tried to tell Veronica about it but was ignored. [Source: Document 2]
10. During a school dance, Veronica and her friends pulled Katie's dress, revealing a scar on her back. [Source: Document 2]
11. Katie confronted Veronica, who admitted to telling her friends about the scar. [Source: Document 2]
12. Veronica was expelled from school for her actions. [Source: Document 2]
13. Katie's stepmother, Mary, was revealed to be the one who told Veronica about the scar. [Source: Document 3]
14. Katie confronted Mary, who admitted that she didn't love Katie because she couldn't love her right away. [Source: Document 3]
15. Katie and Mary eventually formed a bond, with Mary expressing that she loves Katie as much as her own daughter. [Source: Document 3]