I wanted to post this at the top of the thread so you all would see it--I was swamped at work and couldn't post earlier. You guys ROCK, with the advice and opinions. Thank you. we spoke with FL, and they are going to seat us at a smaller table. She will not be "eating" with us, but will still be able to enjoy the experience by "dining" with us. I think it was very generous of FL to accomodate us, and greatly appreciated. It eases my mind, because while I really wanted to go to the FL, I agree with other posters that my granny might have felt bad about not being able to "clear her plate" with that kind of price.
My mom is paying for the evening BTW. With that out of the way, I can now fully enjoy an experience I've been waiting a long while to have. I love the Chowhounds--you all have never let me down yet!
I will, of course, provide my full report of my experience upon my return. Merci encore.