Why did elizer's father ask him if he remembers Mrs. Schachter in the train?

Eliezer's father asked him if he remembers Mrs. Schachter because she had been a fellow prisoner on the train to Auschwitz, known for her disturbing visions of fire and flames. Her frantic warnings about the horrors awaiting them served as a haunting reminder of the reality they were about to face. By recalling her, Eliezer's father aimed to reinforce the gravity of their situation and the impending danger. This moment highlights the psychological trauma experienced by those on the train, as well as the disintegration of sanity amidst fear and uncertainty.