billty. when she stepped foot on campus, she was outgoing, loved sports and learning. soon that all changed. >> she became the victim of the mean girls in the school. there was malicious gossip of her background. she was from a working class background. >> many said kate was miserable, shy and withdrawn, much like diana when she first went to boarding school. >> she was very shy. i didn't really notice her. >> reporter: penny walker, diana's music teacher remembers. >> there was unrest in her home life. that often affects children. >> reporter: were her bad grades troubling to her? >> immensely and i think she tried hard. i think her concentration was elsewhere. >> reporter: on what? >> family.