Final answer:
Frank learned of Patricia's death through the somber changes and indirect communication among those around him, such as the behavior of her family and veiled references to the tragedy in their conversations.
Step-by-step explanation:
Frank found out about Patricia's death through indirect means. The provided text suggests that he did not receive the news directly but came to know about it from the changes in behavior and the atmosphere surrounding him.
Patricia's passing had a profound effect on those around her, altering their demeanors significantly. From the vague and muted ways people spoke, such as her sister Josephine, and the hints given in their broken sentences, it became evident that a tragedy had occurred.
The text alludes to an environment filled with sorrow, a father who had become silent, and others who were unwilling or unable to talk about what had transpired. This atmosphere of loss and the subtle cues given by people's reactions were likely what informed Frank of Patricia's death.