Final answer:
During her first visit to Mrs. Dorling, the narrator discovered her family's belongings, which Mrs. Dorling never returned after taking them for protection during World War II.
Step-by-step explanation:
The narrator's first visit to Mrs. Dorling was particularly notable because it shed light on a twist in the fate of her family's belongings during World War II. When she visited Mrs. Dorling for the first time, she initially found her to be an indifferent and unknowable personality. Upon entering her home, however, she unexpectedly discovered that Mrs. Dorling had taken many of her family's treasured possessions, claiming it was to protect them during the war, but never returned them. This discovery was disconcerting, evoking feelings of violation and grief as the narrator realized the betrayal.
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