A possible summary is:
Zelda is a girl who feels different and unloved because of her social awkwardness and curiosity. She falls for Skylar, the most popular boy in school, who asks her out as part of a bet. When an earthquake damages her house and a false report of her disappearance goes viral, she decides to hide and pretend to be missing to get sympathy and attention. She also disguises herself as a new girl and dates Skylar again, hoping he will love her for real. However, she discovers that Skylar is in a gang and cheats on her with other girls. She exposes him and herself in front of the whole school, and regrets her selfish actions. She learns to accept herself and appreciate her parents' love.
Here are some possible key facts extracted from the text:
1. The narrator, Cell, has a different way of thinking and communicating than most people.
2. Cell was bullied and isolated at school for being weird and awkward.
3. Cell dated Skylar, the most popular boy in school, who later revealed he was paid to go out with her as a joke.
4. Cell pretended to be missing after an earthquake to get sympathy and attention from others.
5. Cell disguised herself as a new girl and dated Skylar again, hoping to expose his lies and crimes.
6. Cell confessed her hoax and apologized to everyone, realizing she was wrong and selfish.
7. Cell's parents supported her and told her they loved her.