Read the excerpt from "I'm Not Thirteen Yet" by Amy Bernstein. Gradually, Lynette stopped inviting me over after school. One day, on my way into the girls' bathroom, I overheard Lynette and Shelley Abrams discussing their after-school plans at Dale's Ice Cream. "This afternoon is going to be so much fun," said Lynette. "It's going to be you, me, and the rest of the ‘Fab Thirteens.’ Just remember, no twelve-year-olds." What significant event is described in this excerpt? Jamie finally joins the “Fab Thirteens.” Jamie loses her best friend. Jamie will turn thirteen soon. Jamie goes to Dale’s Ice Cream.