Who is this nice lady?

It was a cold day in December in a little town in New York. A little boy about 8 years  old was standing by himself before a shoe store on the roadway, barefooted, shivering with cold. A lady approached the boy as he stood up to approach the window of a shoe store, and said to him, "My little fellow, why are you looking so earnestly in that window?"  

"I was asking God to give me a pair of shoes," was the boy's reply. The lady took him by the hand and went into the store and asked the clerk to get half a dozen pairs of socks for the boy. She then asked if he could give her a basin of water and a towel. He quickly brought them to her. She took the little fellow to the back part of the store and, removing her gloves, knelt down, washed his little feet, and dried them with a towel. By this time the clerk had returned with the socks. Placing a pair upon the boy's feet, she purchased him a pair of shoes. She tied up the remaining pairs of socks and gave them to him. She patted him on the head and said, "No doubt, my little fellow, you feel more comfortable now?"   As she turned to go, the astonished lad caught her by the hand, and looking up in her face, with tears in his eyes, answered the question with these words: "Are you God's Wife?"