The people in Elle's Cart explained Madam Schachter's vision of Fire as her being thirsty.
When she continued yelling by the third time, they beat her. Apparently, she knew about the crematorium that they eventually saw.
Madam Schachter is a character in Elie Wiesel's novel titled "Night".
Soon after separating from her husband she goes crazy. Whenever she entered a train, she would scream about an "imaginary fire".
Learn more about Madam Schachter at:
https://brainly.com/question/3139206