Definitely in Toontown Hall of Fame. We saw her 2 days in a row with a short (15-20 min) wait. Her line was the longest though LOL.
They let 2 or 3 families in the greeting room at one time and you rotate through the few characters that are in there. One day it was Belle, Cinderella and Suzy. They really give you a nice moment to interact, it is private and away from the crowds. The background in there is great too, perfect for Photos!