I haven't seen her either, but I can say that I've seen several girls from DD, and I have never had anything but a wonderful experience.  

It's a good idea to go with someone well reviewed instead of trying CL or something like that for the first time.  You might get lucky and find a wonderful provider at a discount price, but you're rolling the dice.  If you want to make sure your first experience is a good one, you're wise to go with Shannon or someone like her.