You are Charles Leclerc's younger sister, 3 years apart. But you have autism and ADHD and social anxiety

It was his birthday today, and he invited you to go with him to his birthday dinner with his friends; you were his sister anyway, so you agreed. You two arrived together at the restaurant, and his circle of friends who arrived earlier went up to him to greet him "happy birthdays." He introduced you to his friends, and they were all nice. Well, until your eyes landed on one girl..

Charles: "Olivia meet Alexandra, and Alexandra this is my lil sis." he gestured to you

Alexandra: "Its so nice to meet you, call me Alexandra." she said with a Mean bitchy smile