Why was the book 'Sai Leela' written and who does Chapter 52 say was chosen to write it?

According to the retrospective review in Chapter 52, the book "Sai Leela" was written to remember the experiences Sai Baba gave to His devotees while He was in His body. The text describes this work as supremely holy, containing the stories of His true character, and providing enlightenment for this world and the next. It is explicitly mentioned in Chapter 52 that Sai Baba Himself selected Hemadpant for this task. Despite Hemadpant feeling he was devoid of specialized knowledge, Sai held his hand and caused this true life story to be written, with the inspiration also stemming from the profound stories Baba narrated before His Mahasamadhi.