N Raymond's Run, the theme of the story is the significance of familial relationship in life. The theme reflects the selfless and antimate bonding between a brother and an sister.
The key details are the amount of hours working per week
While she seemed nervous throughout the interview, at first, she was reflective over what she could have done differently in the written portion of the questionnaire. This then changed back to nervousness. And her anxiety started to build as she recalled the names of those she had met thus becoming intimidated as stated in the text. Towards the end, she had to fight the nervous fidgeting, which showed great restraint as the interviewer noticed about her. She also noticed that she was calm and sedate, then courteous and civil, ending with great restraint.
To me, it just means that the older you get you do get closer to your death but you also experience new things that make you get comfortable with dying so you might as well be happy and live fully while you can and not think about you getting closer to dying.