How does Meg Cabot use imagery in The Princess Diaries?

Imagery:

"And Grandmire said, all prissy, 'Well if you don't try to accommodate the media, they're just going to try to get the story any way they can, which means they'll keep showing up at your school."'

"But I couldn't help thinking if it really were the end of the world, it might be better to be with Michael, even if he isn't so hot, because at least he makes me laugh. I think at the end of the world a sense of humor would be important."