The toy engine was, literally, as good as new.
"Good-bye--oh, good-bye," said Bobbie, just before the engine screamed ITS good-bye.

"I shall always, always love you--and Jim's second cousin's wife's brother as well!" And as the three children went home up the hill, Peter hugging the engine, now quite its own self again, Bobbie told, with joyous leaps of the heart, the story of how she had been an Engine-burglar..