Can you describe the unique way Mavshibai performed service for Sai Baba and how it was perceived by Damu Anna?

Mavshibai's service was remarkably intense and driven by pure love. Chapter 24 details her method: she would twist with both hands and "grind" Baba's stomach, pressing and churning it as one would a pot of buttermilk. Absorbed in Sai's name, she did this fearlessly, and Baba seemed completely at ease. However, Damu Anna, who was also serving Baba nearby, perceived this extraordinary service differently. The text states that her vigorous method, which made Baba's stomach and back flat, produced a sense of pity in Anna's heart. He saw the strange jolts and movements, which he may have found unsettling, contrasting her loving intent with his own observation of the physical act.