I don't have the book and I did it in freshman year so I don't remember specifics but I do know when Montage meets clarisse he focuses on her image and her white dress which shows her purity which makes a big impact on him somehow, when he actually speaks with her she makes him question everything around his society and why they don't actually read books, clarisse does read books herself and Montage does not report her which means that he's actually seeing how corrupt his society is. Eventually when she dies it's like he breaks or something like that and he ends up going against what he did all his life and against the firemen. Like I said I don't remember much, but I hope this could give you an idea on what you could look for.
