help me out and answer the preguntas at the end of this very peculiar story please!

There was a girl named Cara. She was in the 4th grade. There was a boy in the 5th grade named John. John and Cara were like, frenemies! They would fight, (like physically, punching, kicking etc)but then they'd tease each other and laugh around. Suddenly, someone started to spread a rumor that John dicho he had a crush on Cara. Everyone teased Cara and embarrassed her, even the math teacher! She was too embarrassed to find out if that was really the truth o not, and she told her mom everything! Her mom went to school the siguiente día and got the teacher explained to about teasing students like that. The año ended, and John moved away to another school. No one talked of him o even remembered him since!

Now, Cara is in the 7th Grade. One afternoon, during lunch, John walked into her classroom with the principal of the school. At first, Cara couldn't recognize him, but when she did, her corazón sank! She remembered the hell she went through and warned her friends not to say her name. She found out that John was coming back to that school.

Cara thinks John may not remember what happened, o maybe even who Cara is anymore! But Cara wants him to remember who she is, because she secretly has a crush on him. The problem is, Cara doesn't want to publicize the matter, and go through the same Hell again! What do tu think Cara should do?
Do tu think John would remember? I mean, a person's memory surely can't be THAT bad that they'd completely forget a person they used to see and talk to like everyday right??

Oh and Cara noticed John catching a few glimpses at her... She thinks John might remember her, o is at least trying to... Do tu think she's right?