It's prom night. The teen girl also got the "Young Politicians Club Induction" opportunity. I sent her over to the library right after school to read a charisma book (she's already at level 5), but she doesn't have enough friends to make level 6. Instead she came home to improve the relationship with her mother (it REALLY needs work) to get another friend. Her date showed up for the prom and the younger brother kept him busy while he waited for the limo. The limo came, she got in. He went to play in the sprinklers. The limo delivered her to the prom. According to messages, they are both having a great time at the prom. He, however, is actually still at her house doing homework in the study.
Update: When she gets home from prom, he is sleeping in her bed.