A possible summary is:
The text is a story of a girl named Ana who struggles with her mother's kleptomania and a bully named Billy. She falls in love with Sebastian, who turns out to be Billy's brother and part of his revenge plan. She breaks up with him and focuses on her studies and her bakery business. She later reconciles with Sebastian after he helps her mother recover from a stroke and proves his love for her.
Here are some possible facts extracted from the text:
1. The narrator's mother had kleptomania, an uncontrollable urge to steal.
2. The narrator was bullied by Billy, who was expelled for breaking the narrator's arm.
3. The narrator dated Sebastian, who turned out to be Billy's brother and sabotaged the narrator's grades.
4. The narrator failed high school and worked with her mother in a bakery.
5. The narrator passed high school exams after a three-year break and got a scholarship to a university.
6. The narrator's mother had a stroke and Sebastian took care of her and the bakery.
7. The narrator reconciled with Sebastian and gave him another chance.