I heard there's a story in Chapter 32 about a woman who wanted to fast. What happened to her and what was the point of the story?

According to the introduction in Chapter 32, a woman came to Shirdi with a firm resolve to have Baba's darshan and fast for three days without food. However, the chapter explains that an occasion arose where her resolve was broken. Sai Baba intervened and had her make puranpolis and also made her eat them to her heart's content. The text presents this as a profound lesson. As stated in Chapter 32, this act was meant to demonstrate that "wearing out the body for others' sake - this blessed act is true welfare." The incident was designed to make her understand a deeper spiritual truth about service over self-imposed austerity in a way she would never forget.