"'Alas! alas! what is done in youth can never be undone in age! What is done in youth can never be undone in age!'..."See in text(The Old Nurse's Story)
The final sentence of the nurse’s story sums up the story’s moral: mistakes cannot be erased. Though Miss Grace regrets her actions, she cannot change them, and she is literally and figuratively haunted by them even to her death. The choice to end the story on this note reinforces the nurse’s telling this story to the children to instruct them on how to behave, having drawn them in with a dramatic ghost story. With the moral delivered, the story can end.