I suppose my main concern would be that she is hardly an athlete... (what can I say, she takes after her parents) - so she can not hula a hula hoop, nor can she jump rope.
Are these requirements for K? I can't do them either, and I passed K a long time ago!

I suspect girls have it a bit easier than boys on the athletics front. (Fairly or no!) I wouldn't think that should be a barrier to acceleration assuming she's not developmentally delayed in significant ways. Kids develop at all different rates, so she might not be the best athlete. But so what about that?
I would think that behavior and ability to sit still are much bigger concerns. If she's unable to listen and follow directions or incapable of sitting still for more than a minute, it could be a problem. But not being able use a hula hoop? I think she's on pretty solid ground on that one!