How does the incident with mrs schachter show the Jews losing their compassion?

At first Mrs. Schacter's screams and outbursts are met with compassion. People in the car try to reassure her and even place a damp rag on her forehead. Eventually her screams and cries began to wear down the Jews in the car. She was bound, gagged, and hit over the head. After she calmed down, people seemed to ignore her. At night she would begin screaming and yelling again. People gave up trying to calm her and hit her to make her quiet. During their time in the train car, they have lost their compassion for her and have begun to act violently.