What is the primary theme introduced in Chapter 15, and what analogy is used to illustrate this concept?

Chapter 15 introduces the central theme of how loving devotees pray to Sai and how He, being pleased, grants them His vision. To illustrate this divine relationship, the chapter employs a touching analogy of a mother cat and her kittens. The text describes how kittens, upon their mother's return, run to her with love. She may initially growl, annoyed, but when they persist and swarm her with affection, her maternal love overflows. As mentioned in Chapter 15, she forgets her previous annoyance and spreads herself on the ground to nurse them, symbolizing how Sai's grace flows to persistent devotees.