The milk of Grace overflows in torrents to the loving hearts, to the thirsting and yearning souls. The child-like innocence, pure and sincere love attracts this milk of grace the most.
The mother by nature feels the urgency of the child, no sooner than the babe wants it. As the milk of the mother flows spontaneously out of love of the babe, so does the milk of Grace and Love of the Lord flow uninterrupted in the yearning and pure devotion of a child of the Lord. The child does not have to demand for the milk; a mere impulse is sufficient to elicit a spontaneous response of the Lord.
The mother also feeds the child in sleep though the child is not aware of it. Similarly, Satguru, a true divine parent, spiritually feeds and nourishes the innocent, child-like devotees totally dependent on Satguru's grace.