Willie changes because Tom gives him safety, patience, and encouragement instead of fear. Kindness helps children learn better because feeling safe and valued lowers anxiety, allowing their minds to open up and grow, just like Willie learns to read, write, and express his artistic talent through Tom's gentle support.
The author creates surprise by having Willie think he is just going back to an empty house after drawing in the church, only to walk into a room full of people shouting "Surprise!" and singing. The author shows Willie's happiness through physical actions rather than words, such as him beaming, gasping in awe, clutching his new book tightly to his chest, blushing crimson, and feeling so overwhelmed by excitement that he vomits on the carpet.
Willie's past life in London was filled with fear and abuse from his mother, whereas his present life with Tom is safe, loving, and full of care. The missing letter from his mother highlights her continued neglect and emotional absence, contrasting sharply with the genuine warmth and affection he receives from Tom and his new community.
Their relationship teaches us that love and patience can heal deep emotional wounds and build a strong family out of strangers. Celebrating small joys is important during hard times like war because it brings hope, comfort, and a sense of normalcy when the world outside is full of fear and uncertainty.