Even if I did nothing she still would go through the material like a force of nature, cause that just the way she is.
I hope it's true that you daughter 'can't be stopped' but I fear that if she was in an uncomfortable school situation for a year or two, that she could be stopped.
I think that the best thing to do is to watch if each child seems happy and willing to try hard things. To see if the kids in the current grade seem like a better social match than the kids in the next grade up. To try, try, try for subject accelerations on top of the full skip foundation whenever possible. It doesn't have to be a perfect match, just 'good enough.'
Another big difference is the home situation. I think that kids who have siblings or housemates who are also gifted as playmates need a lot less from school and parents. When the siblings provide competition, audience and inspiration for each other, the parents need to provide a lot less. Not so say that some sibling situations aren't really difficult, but I think that when a sibling situation is good, it can be VERY good. Part of what helped me feel normal as a kid was coming home from school and playing board games with my little brothers. Even though they were younger, beating them was a total thrill.
Love and More Love,
Grinity