Final answer:
In Elizabeth Fuller's diary, she is unable to attend Harvard due to its male-only policy and longs for more freedom and opportunities in her life.
Step-by-step explanation:
In Elizabeth Fuller's diary, she does not get to do many things due to various circumstances.
One thing she does not get to do is attend Harvard, as it was a male-only institution for undergraduate students until 1973. Even though she had a towering intellect and was later granted use of the library there, she was still restricted from obtaining a formal education at Harvard.
Additionally, Elizabeth does not get to live the life she desires and make her own choices. She feels confined and restricted, comparing her life to that of a nun, and yearning for more freedom and opportunities.