What did Sai Baba teach the lady about his presence in other living beings?

According to Chapter 9, Sai Baba taught the lady a profound lesson about his omnipresence. After she fed a hungry dog, Baba explained his "oneness with him." He elaborated that he is not just the dog, but also a pig, cow, cat, ant, fly, or even aquatic creatures. Baba stated, "in such forms I roam." He then instructed her to "renounce the sense of difference; thus alone worship me." This teaching revealed that he exists within all beings and that one should not see any difference between him and other creatures, as he experiences their joys and sorrows directly.