Can you explain the incident with the Dhangar woman and how Sai Baba used it to communicate with Sapatnekar?

Certainly. The incident occurred after Sapatnekar, in great distress, resolved to seek Baba's grace and grabbed his feet when he was alone. As detailed in Shri Sai Satcharitra, Chapter 48, a Dhangar (shepherd) woman then arrived and began massaging Baba's waist. Baba started a conversation with her, but the topic was a miracle. Sapatnekar, who was listening carefully, was shocked to realize Baba was narrating his own life story in its entirety, from birth until death, even mentioning his late son. Though the woman was the audience, the story was Sapatnekar's. This indirect method revealed Baba's intimate knowledge of his life and served as a profound reassurance.