The theme of Sarah's Key is what the author is trying to get out to its readers, and that theme would have to be hope. The author is trying to get the readers to realize that you have to have hope. You have to be strong, and believe. Be big, and hope things will get better. She really got that point across me. She makes me believe that it is going to get better and people do grow stronger. This book really describes the situations the little girl had to go through and how she hoped for better. The people that survived the holocaust are extremely strong to me. All they could do was hope that life would get better, and things would go back to the way they were.