How did Sai Baba use a conversation with a shepherd woman to reveal Sapatnekar's life story?

In a remarkable incident described in Chapter 48 of the Shri Sai Satcharitra, Sai Baba revealed his omniscience to Sapatnekar in a unique way. After Sapatnekar resolved to not leave without grace and approached Baba, a Dhangar (shepherd) woman arrived. Baba began a conversation with her, but as Sapatnekar listened, he was shocked to realize that every word was his own life story, told as if by a well-acquainted relative. The text notes that Baba even mentioned the death of Sapatnekar's late son. Though the story was addressed to the woman, she had no connection to it; it was Baba's way of directly addressing Sapatnekar's heart without speaking to him directly.