Do you think all this will change Derry’s attitude towards Mr. Lamb?

Explanation

Yes, all this will change Derry's attitude towards Mr.lamb.Derry’s burnt face made him the center of ridicule. Although people sympathized with him, it was never a heartfelt one. This resulted in his pessimistic approach towards life. He thought that everyone detested and despised him. On the contrary, Mr. Lamb did not show any pity towards him.
He considered Derry to be his equal and welcomed him in his garden.Mr.lamb had a tin leg and Derry had a burnt face.So Mr.Lamb could empathise. He helped the boy to love and live life happily without any contempt for his own self. Derry had initially considered the old man to be like others, but he gradually started respecting and liking him for what he said.