Edward is best described as a dynamic character in that he changes dramatically by the end of the novel. How does Edward change? What prompts this change?

Consider Pellegrina’s story. In what ways is Edward like the princess? In what ways is he different? 

Pellegrina is Abilene’s grandmother and the one who commissioned Edward to be made. However, Edward is convinced that Pellegrina is the witch from her story. Why does he think this? If his idea is true, what effect does it have on the reading of the novel?