Who were Damu Anna and Mavshibai, the two devotees mentioned in the story about the quarrel?

Damu Anna and Mavshibai were two elderly and devoted followers of Sai Baba who are central figures in a story from Chapter 24. The text describes Damu Anna as a man who had "crossed fifty" and had no teeth. He was serving Baba by pressing his left hand. Mavshibai, whom Baba affectionately called "Mother" (Aai), was a widow of mature age whose original name was Venubai Kaujalgi. She was known for her "incomparable devotion" and served Baba by vigorously massaging his stomach. The narrative focuses on a humorous quarrel that erupted between these two while they were serving Baba, which Baba then skillfully resolved.