What lesson did Sai Baba teach the woman who intended to fast for three days, as mentioned in Chapter 32?

According to the summary in Chapter 32, a woman arrived with the firm intention of fasting for three days. However, Sai Baba intervened to teach her a deeper spiritual lesson. The chapter explains how her resolve was broken when Baba had her prepare and then eat puranpolis until she was content. The moral of this incident, as highlighted in the text, is that "wearing out the body for others' sake - this blessed act is true welfare." Baba demonstrated that selfless service and fulfilling the needs of the present moment can be a higher spiritual practice than rigid, self-imposed austerities like fasting.