I found this pictures of an actress named Amanda Bynes, and I think she looks pretty close to what I see in my mind, just make the hair curly. She has that pleasant face with friendly round cheeks that I think Amy should have. Amanda Bynes was in the movie Syndey White (a tongue-in-cheek remake of Snow White). In the movie, her face was the perfect "Amy" but I had a hard time finding many pictures of her that looked much like she did in the movie.
