Final answer:
The nurse, Jennie Colligan, worked on Ellis Island for twenty years and had positive experiences with the immigrants she worked with.
Step-by-step explanation:
The caption above helps us understand that the nurse, Jennie Colligan, worked as a nurse on Ellis Island for twenty years. From the given information, it does not specify whether she worked closely with immigrant children or was assigned to the surgery ward. However, it can be inferred that she enjoyed her job and the immigrants she worked with. The information provided about Ellis Island processing over 12 million immigrants during the years it was open gives us context about the work environment and the population Jennie Colligan would have interacted with.