Why was Sai Baba's reaction to Mrs. Khaparde's food offering so different from his reaction to others?

Sai Baba's response to Mrs. Khaparde's food offering was markedly different and caused wonder among his devotees. According to Chapter 27, when she brought a plate filled with items like Sanja, Puri, and kheer, Baba became very eager, pushed up the sleeves of his kafni, and immediately sat down to eat. This was a stark contrast to his usual behavior, as he often kept other offerings, even superior ones, waiting for a long time or would even cast silver plates aside. Madhavrao questioned this apparent partiality. Baba's keen interest was a mystery that he later explained was due to a deep connection with the lady from her previous births, demonstrating his grace in a unique way.