A possible summary is:
Alice, a lonely girl who lives in a spooky house, tells the story of how she imagined a brother named Damian who turned out to be a malicious ghost. She also meets Tara, a girl who loves paranormal romances and becomes her friend. Alice's parents reveal that Damian was never real and that she needs therapy to overcome her low self-esteem.
Here are the key facts from the text:
1. The narrator, Alice, lived in a spooky old house with her parents.
2. The house belonged to her grandmother, who was a strange woman who studied tribes in Africa and the Amazon jungle.
3. Alice's parents were always working and didn't have much time for her.
4. Alice started giving ghost tours around the property when her parents were away.
5. Alice's parents adopted a boy named Damian, but they didn't tell her about it until he arrived.
6. Damian was a skinny and pale boy who was Alice's age.
7. Alice and Damian had a series of challenges to prove that Damian was worthy of being her brother.
8. Alice's parents forbade her from playing with Damian, but she didn't understand why.
9. Damian started picking on Alice's parents and causing trouble.
10. Alice's parents sent Damian away to a special center, but he returned and started causing more trouble.
11. Alice's parents told her that Damian was not real, but a product of her imagination, created to help her deal with feelings of loneliness.
12. A doctor told Alice's parents that she suffered from low self-esteem and that Damian was a manifestation of her need for a friend.
13. Alice's parents and the doctor decided to start therapy sessions to help Alice deal with her issues.
14. Alice was shocked to learn that Damian was not real and that everything he did was actually her own actions.
15. Alice's parents apologized for not spending enough time with her and promised to be there for her during the therapy sessions.