Who was Mavshibai and what was her method of serving Sai Baba?

Mavshibai, whose original name was Venubai Kaujalgi, was a devoted and mature-aged follower whom Sai Baba affectionately called "Mother" (Aai). Chapter 24 describes her as having incomparable devotion to Sai. Her method of service was particularly intense and physical. While others massaged Baba's feet or back, Mavshibai would press and churn his stomach with great force, as if grinding buttermilk. She would twist with both hands, causing Baba's body to move up and down. This extraordinary service was an expression of pure love, though it appeared strange to onlookers like Damu Anna, who found the vigor of her actions to be pity-inducing.