I'm not crazy

"She's so pretty. Everything about her is perfect. Her eyes, Her Hair. I want them! She's also my best friend. But in her diary, she's calling someone crazy, creepy, weird. She's not talking about me. She can't be. I'm not crazy! I'm not!! She says the girl watches her from her bedroom window. Could it be me? Naw, she doesn't know." Does Marzy need to be in a mental institute? Well, the whole school, plus some thinks that. Will her craziness, lead her there? Or will she be forever able to creep on her 'Best Friend' Taylor and her crush Mark?