Explain why people comfort Mrs Schachter with saying that they do not believe are true in Night by Elie Wiesel?

People comfort Mrs. Schachter by saying they do not believe her because her visions of fire and destruction on the train are too horrific for them to accept as reality. They try to deny her visions in order to maintain their own sense of hope and sanity in the face of the impending danger. Ultimately, this denial is a coping mechanism to avoid facing the harsh truth of their situation.