Welcome to the board, Thom! I'm thrilled that you're enjoying yourself.
I think Alex has stayed away from conventions and the like because she was afraid of fan reaction but from what I understand when she appeared the Museum of TV & Radio ceremony last year she got the biggest applause of anyone.
I do realize that you were just speculating here, but I wanted to add that I don't believe Alexandra has ever publicly stated why she hadn't attended any DS events before her appearance at the DS tribute. Your post is fine, Thom, but my concern is that fans reading these boards may mistake the opinions expressed here to be facts, especially when they have to do with an actor's private life, and that's why I feel we have to be careful when making guesses or speculating about their personal motives.
And yes, the response she got from the audience was tremendous. It was very touching.