she is locked up in an attic with her family, the van daans and dussel.she is forced to keep quiet because if she talks too much, they will get in a fight and eventually get caught by the nazis for making too much noise
What you wrote is a snapshot of the plot. There are so many themes in this book to consider. Some of them include identity, coming of age, war, anti-semitism and what it means to be Jewish. One has to only picture in their mind what a Jewish adolescent girl might have to deal with hauled up in a room waiting for Nazis to knock on her door. Rather than rambling on, I'm going to give you a link to the GradeSaver site that deals with your query in greater detail.
http://www.gradesaver.com/the-diary-of-a-young-girl-by-anne-frank/study-guide/major-themes/
