What was Mavshibai's method of serving Sai Baba, and how did others perceive it?

Mavshibai, whose original name was Venubai Kaujalgi, was a devoted follower whom Baba called "Mother." Her service was quite extraordinary and intense. Chapter 24 explains that while pressing Baba's stomach and side, she would twist with both hands, "grinding" his stomach and churning it "like a pot of buttermilk." She performed this service fearlessly, absorbed in Sai's name, and Baba himself seemed completely at ease. However, this intense method produced pity in Damu Anna's heart. In a separate incident, another devotee was so worried by the intensity that they asked her to stop, fearing Baba's veins would break.