The most amazing part of the story of this photograph is that she subsequently did some research about Hawthorne and the house. While looking through a library, she came across one of Hawthorne's books, Twenty Days with Julian & Little Bunny by Papa. On the cover of that book is a portrait of Hawthorne's five-year-old son, Julian. And as you'll see by clicking on the photo at left, the portrait of little Julian bears a striking resemblance to the ghost in Lisa's photograph.
You can read the full story of this photograph in the article, "The Ghost of the Seven Gables."