What caused the quarrel between Damodar Anna and Mavshibai while they were serving Sai Baba?

As detailed in Chapter 24, a quarrel arose between two elderly devotees, Damodar Anna and Mavshibai, while they were serving Sai Baba. Anna was pressing Baba's hand, while Mavshibai was vigorously massaging Baba's stomach. In her deep absorption in service, her face came very close to Anna's. Mavshibai then humorously accused Anna, saying, "Have you no shame for your gray hair? You are trying to kiss me!" Although likely a joke, this comment angered Anna, who felt wrongly accused. He rolled up his sleeves to argue, retorting that she was the one who brought her face close to his and was now trying to start a fight.