We've seen her there 5 out of the 6 times we've eaten there (I can't believe we've eaten there that many times!!) at both breakfast and lunch (never had dinner there). So we saw her in Oct 2002 breakfast, Dec 2003 breakfast, Aug 2004 breakfast, Oct 2004 breakfast, Nov/Dec 2005 lunch. We did not see her for our Sept 2005 lunch trip.
She is also available right down the way in China. This past trip in Nov/Dec right after we saw her at the Princess lunch, we then ran into her and Mushu in China and got our pictures with her again because my girls love Mushu.