Good for you David. Go, be positive, upbeat, and enjoy the time. As 25 posted elsewhere, your d will look back at this Thanksgiving as a significant milestone event... make sure it's something worth remembering.
You are right to measure your reaction to the comment. See if you ran "That would be nice" through the LBH translator you get, "I love you and I'm so sorry, please see this as an olive branch on our road to getting back together." But if you run it through the WAW translator you get, "Ok. Now I don't have to feel guilty about not at least being nice on an important holiday and my daughter won't feel quite so bad." See... the difference?
Yes, the above is a bit sarcastic, but I've been there man. I've read the littlest comment or act as something way more than it really was. Quite frankly, at this point in her process, she's all about her and her needs so interpret most things in that light.
Married 6 together 8 Me:38 W:31 second marriage for both SS12, SD10, S6 Bomb: 9/8/11 (day before our 5 yr ann) W moved out: 2/18/12 D final: 11/12/12 Share S 50/50. Spend as much time as I can with SS & SD