What does Hannah learn about Chaya

Chaya Abramowicz is the girl whose life Hannah enters to experience the horrors of the Holocaust. She learns that Chaya is a relative from her past. Chaya lost both her parents to cholera, a disease that almost claimed her as well. She is taken in by Gitl and Shmuel Abramowicz, her aunt and uncle. Much of what Hannah tries to convey to Gitl and Shmuel is chalked up as nonsense due to the psychological stress Chaya has experienced in losing her family. Hannah learns that she was named after Chaya and that she and Chaya share a striking resemblance.