I heard about a woman who wanted to fast but Baba made her eat. Can you tell me what Chapter 32 says about this?

Certainly. Chapter 32 introduces the story of a woman who arrived in Shirdi with a firm resolve to have Sai Baba's darshan and to undertake a three-day fast without food. However, the chapter explains that circumstances unfolded in a way that her resolve was broken by Baba's intervention. He had her prepare puranpolis and then made sure she ate them to her heart's content. According to the narrative in Chapter 32, this was a practical lesson to help her understand that selfless service, or 'wearing out the body for others' sake,' is a blessed act and a form of supreme welfare, which in that instance was more important than her personal austerity.