Stopping the train
After all, attempts to reason with Jess had failed, and the security guard had no choice but to stop the train. After the train was stopped at a station, the security guard told Jess that she had to leave, but she still would not get up and go. Now things were taken to the next level.
Jess was really being a terrible person here and was just pretending to ignore all the chaos that was happening around her. Angry people were now yelling at her because she was holding up the train all due to her arrogance and selfish behavior. We guess that in her mind, she thought too highly of herself to back down now.