What was the specific role of the Dhangar woman in the leela involving Sapatnekar?

In the story of Sapatnekar from Shri Sai Satcharitra Chapter 48, the Dhangar (shepherd) woman served as a catalyst and a medium for Sai Baba's miracle. While Sapatnekar was holding Baba's feet, she arrived and began her usual service of massaging Baba's waist. Baba then started a conversation with her, but as the text clarifies, she had no actual connection to the story being told. She merely provided the audience for Baba's narration, saying "Yes" as He spoke. Her presence allowed Baba to indirectly narrate Sapatnekar's entire life story, making the revelation even more miraculous and demonstrating to Sapatnekar that Baba's knowledge was not gained through conventional means.