In the book "Devil's Arithmetic," Chaya is the alter ego or earlier incarnation of the main character, Hannah. Chaya represents Hannah's Jewish identity during the Holocaust, while Hannah represents her modern American Jewish identity. Through a mysterious time travel experience, Hannah is transported back in time to a concentration camp where she takes on the persona of Chaya.
1942
Spring
that she went back in time and she was in the holocaust and she has to cut her hair and her new name was chaya.
Chaya is Hannah's Hebrew name
Mr. Unsward is a teacher that Chaya had and was reminded of while in the concentration camp.
1942
1942
Spring
When Chaya takes Rivka's place and marches off to her own death
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Chaya comes back to her home
that she went back in time and she was in the holocaust and she has to cut her hair and her new name was chaya.
Chaya is Hannah's Hebrew name
Blokova (The lady in blue that have three fingers)
Mr. Unsward is a teacher that Chaya had and was reminded of while in the concentration camp.
The plan was for Gitl Shmuel Yitzchak Chaya and unnamed others to escape the concentration camp also the devils arithmetic was each day Chaya was going to stay alive although some other answers do not say that
Chaya, otherwise known as Hannah, was living with her Aunt Gitl and Uncle Shmuel because her parents died. She came to live with them and by then she was recovering from being sick