Kerry,
in my humble opinion you shouldn't hesitate to let your daughter skip another grade. If she is "the Boss" rather than the "team leader" and she is already a year younger than her classmates, I am thinking she is clearly not with her true peers. My oldest went through the same thing and was so much happier after skipping to the grade with her true peers (and she happily quit being so bossy because her peers were more willing and able to challenge/compete with her). My youngest was so physically small and socially immature that we decided not to have her skip and in hindsight I think it was a huge, HUGE mistake. I wish I had known about the "some of my best friends are books" back then...my daughter read "strawberry girl" off of the accelerated reader list at her magnet school in 2nd or 3rd grade...talk about inappropriate...

I love the quote above. I wish I had found this site 10 years ago