What specifically caused the argument between Damu Anna and Mavshibai while they were both serving Sai Baba?

The argument between Damu Anna and Mavshibai stemmed from a humorous misunderstanding during their devotional service. According to Chapter 24, Mavshibai was vigorously massaging Baba's stomach and, in her absorbed state, swayed so much that her face came very close to Damu Anna's. Seizing the moment, the humorous Mavshibai playfully accused him, asking, "What, Anna, why are you following me? First, give me a kiss." She then chided him for his gray hair. Damu Anna, feeling wrongly accused, became angry, rolled up his sleeves, and retorted that she was the one who brought her face close to his and was now trying to start a quarrel.