Can you explain the lesson behind the story of the woman who wanted to fast, as described in Chapter 32?

In Chapter 32, we are introduced to a woman who wished to have Baba's darshan and intended to remain fasting for three days. However, the chapter previews that her firm resolve was broken. Baba intervened and had her make and eat puranpolis until she was content. The profound lesson taught through this incident, as stated in the text, is that "Wearing out the body for others' sake - this blessed act is true welfare." This suggests that selfless service is a higher form of spiritual practice than personal penance like fasting, a lesson Baba ensured she would never forget.