What is the primary theme and analogy described in Chapter 15 of the Shri Sai Satcharitra?

Chapter 15 of the Shri Sai Satcharitra focuses on the power of devotees' loving prayers and how Sai Baba responds to them. The chapter explicitly states its purpose is to describe how Sai, being pleased, grants His vision to devotees. The central analogy used to illustrate this is that of a mother cat and her kittens. As detailed in Chapter 15, the kittens persistently run to their mother with love, and although she may initially growl, their affection causes her to forget her annoyance and lovingly nurse them. This signifies how a devotee's persistent love can elicit the Guru's grace and darshan.