Answer:
late adulthood
Explanation:
It is very clear from the question that Jessica is living in her late adulthood stage of her life.
It is mentioned that Jessica is losing strength and is deteriorating in health. She is becoming weak day by day and is losing hope. As a result, she has made several changes in her life style according to her age.
She is reflecting back her past decisions and actions taken during her course of life and in wondering whether she had made right or wrong decisions. She also sometimes thinks about the various events that she had witnessed in her past.
Thus, it is clear that Jessica is most likely in her late adulthood stage of development.
