Walu Bhau Pawar was a Maratha woman from Arangaon, the village at the foot of Meherabad. She came from an upper-class village family with landed property, and when Mehera first met her she was wearing elaborate gold ornaments around her neck and wrists. In 1925 Walu was intensely drawn to Meher Baba. Soon after meeting him she surrendered to his spiritual guidance and dedicated all her possessions and property to him. Her husband had died early in their marriage and she did not remarry; she had one daughter.
Walu continued to live in Arangaon, but she was allowed to come daily and be with the women mandali at the Post Office quarters in Meherabad. She baked bhakri, helped Mehera attend to Baba's personal needs, and from 1925 washed Baba's clothes and kept his room clean. On 1 June 1927 Baba went to Arangaon for the wedding of her daughter and remarked, "I was compelled to attend this marriage today because of Walu's love and devotion for me." Lord Meher records that she was the only woman from Arangaon to be included in Baba's close circle of women mandali.
Through the late 1920s and 1930s Walu shared the life of the women's ashram at Meherabad and Nasik. In December 1933, when Baba remarked that shade trees along the path up Meherabad Hill would be welcome, she began planting saplings that very day and carried water from far away to keep them alive; some of those trees still line the path. Baba later ordered that only Walu should clean his cabin on the hill. Though from a well-to-do family, she had profound humility and did every kind of lowly work wholeheartedly.
In 1937 she travelled with Baba and the women to France, staying at Villa Caldana in Cannes. On 19 November 1938 her sari caught fire while she was burning dry grass and her legs were badly burned. When Padri and Dr. Kalavker advised leaving her behind, Baba replied, "No, all of us must start together. Maya must not be allowed to put obstructions in my way!" On the Blue Bus tour that began on 8 December 1938 she had to be carried in and out of the bus, and Rano Gayley dressed her wounds every day.
In the 1940s Walu was among the small group of women who stayed with Baba at Pimpalgaon (later Meherazad), and on 16 September 1948 she was one of the women with whom Baba came to live at Meherazad. During the New Life she was placed at Bindra House in Poona, but the separation from Baba deeply disturbed her, and on 18 March 1950 she returned to her home in Arangaon. In later years she lived at the Family Quarters near Arangaon. Walu was one of the mandali who stayed at Meherabad and served Baba.
Walu died on 1 September 1973 and was cremated at Arangaon in the presence of her relatives.