started writing essay on "The Undomestic Goddess" how people try to run away from their mistakes only to have them haunt them later. Samantha ran away fro her problems. Having a hard time writing enough substance about this.

Isn't this book a light, cute, romance story? And you are trying to find substance in it? Hmmmm.

I don't know if you will find substance in light, cute, romantic fiction. It was not meant to be taken seriously. In your case, see if you can develop parallels in your or other lives (Tom Sawyer comes to mind). What about Bill Clinton and the little white lie he told? Or President Nixon, where little lies led to bigger lies, which led to great lies.
If I were you, I would work along this line, as to me, the book is pretty light reading.