Answer:
The theme of the story is betrayal and the dad is guilty party at the end of text.
Step-by-step explanation:
Lizzie's father John is at the guilty party. Father John has been neglecting her daughter in her childhood is now guilty for his act. The main theme of the story is all about guilt and betrayal. John does not turn out to be a responsible father and he is now guilty for what he has done with her daughter.