Question

Who is Martha and what does she offer?

Answer 1

Martha is Eliezer's family's maid.  She offers to help the family when they are rounded up and placed in the ghetto.  She understands, or at least has a good idea, about what is in store for them. 

Answer 2

Martha was a former servant of the Wiesel's family

She offered a safe refuge in her village but their father refused and said him and his sisters could go but they refused to be separated.