This story has a tragic end. Instead of this, I would like to suggest the following climax.

After arguing with his mom Derry comes back to Mr.Lamb’s garden. There he finds Mr.Lamb cutting apples from the trees and other children helping him. He too picks up an apple and puts it in the basket. Slowly he starts speaking with other children and starts playing with them. Finally, when his mom comes there in a hurry, feels happy to see her son playing with those kids forgetting all his troubles.