What does Judges 17:2 mean?

He told his mother, 'You know those eleven hundred pieces of silver that were stolen from you, and you cursed whoever took them? Well, I have them. I took it.' His mother said, 'May the Lord bless you, my son.' Judges 17:2 - Modern Text Bible

(Micah confesses to stealing a large sum from his mother. She responds by blessing him, reversing her earlier curse.)