The real Francis in uncredited scene

I wonder why the credits don't list Francis Kroll King as playing herself in that very last scene (old woman looking at Fitzgerald's books in store).

You can see a picture of her "back in the day" and in 2002 at:
http://www.anotheramerica.org/frances_kroll_ring1.htm

When I watched the movie, I didn't know it was really her, but I thought to myself, "Wow, they really found an actress who looks like she could be the much older Neve Campbell." Now that wistful, half-Mona Lisa smile she gives as she turns to walk through the mall carries so much more resonance.