According to Greta

Greta is 17, a bright and beautiful young woman. However, she is also rebellious as a result of her turbulent home life. Pushed aside by her mother, Karen, who is on her third marriage, Greta is shipped off to her grandparents for the summer. She is not happy about it and neither are her grandparents. She tells them that she fully intends to kill herself before the summer is over and compiles a notebook of suicide methods.