Hi Sharona,
I believe that gifted kids are more intense in a number of ways, and that oftentimes, as they are developing (and remember that their development can be quite asynchronous) their behavior may manifest itself in what appears to be less than normal responses.
In another post I responded to, I included some links regarding Dabrowski's Theory of Positive Disintegration and the Overexcitabilities (or Super Senstivities as they are sometimes called.)
The post can be found at:
http://giftedissues.davidsongifted.org/BB/ubbthreads.php/topics/31464/Re_Testing_for_DD#Post31464I know that when we discovered the OEs, DH and I felt overwhelmed at how often we could identify ourselves, children and other families members with the various OEs.
Hope this helps a bit. Fwiw, as they grow, I think it becomes easier because they can recognize their own sensitivities. I would encourage you to continue talking through it with your DD - so long as you are cautious to not encourage the continuation of what might be considered negative behavior.
Good luck!