I should probably tell that my basis for Sue's response was from the news report I watched on TV this morning where she said she fully supported the actions of the conductor not stopping, not the newspaper article where she was cited as having been helpful to the dying passenger.
Having ridden the train for many years, it is common knowledge, even among passengers, that the procedure in an emergency whether it is for someone being sick or a criminal activity (e.g., people exposing themselves, stealing pocketbooks, fighting -- all of which happened during my tenure as a train person) is to radio ahead for the proper authorities to meet you at the next station. You then wait until they arrive. Period.
Given that the stops they were going through are about a mile from the nearest hospital and there are at least 2 fire stations within blocks of both stops, it appears the conductor made a very bad decision to continue on as if there were no emergency, making stops to take on more passengers, possibly costing a passenger his life.