Throughout the beginning and end of the Devil's Arithmetic, how is Shifre described? Does she change?

At the beginning of the Devil's Arithmetic, Shifre is described as a typical American teenager who is more interested in her friends and her own life than in her Jewish heritage. She is also portrayed as being somewhat spoiled and selfish. As the story progresses, however, Shifre begins to understand the importance of her heritage and the suffering of her ancestors. She also begins to appreciate the value of family and friendship. By the end of the story, Shifre is a much more mature and compassionate person who is more aware of the world around her.