Describe Sai Baba's reaction upon learning that the narrator had heard a meaningful story from Shama.

According to the account in Chapter 19, Sai Baba showed great eagerness to hear the story that the narrator and Shama had been discussing. When the narrator mentioned the "story of the old woman" and how it revealed Baba's inscrutable nature and grace, Baba leaned forward and urged him to tell the whole story. After the narrator recounted it, Baba's mood seemed pleased, and he listened with focus. He then immediately instructed the narrator to "Keep this in your heart," emphasizing the story's significance and asking if it truly struck a chord and felt meaningful.