The Question and Answer section for The Devil’s Arithmetic is a great resource to ask questions, find answers, and discuss the novel.
Grandpa Dan is only mentioned in the novel. From what Hannah tells us, Grandpa Dan is easier going that Grandpa Will and doesn't reflect upon the past.
Grandma Belle is traditional, and unlike her husband tries to keep the religious celebration...
Hannah helps Aaron with a prayer for the dead.
This is because her parents were better off dead than having to live in a Nazi death camp.