If there is one thing I have learned from this board, it's that all we can do is parent the kid we have today. We just can't know what their needs will be tomorrow, and all the assumptions we make will drive us crazy with how wrong they are. There is no perfect solution for kids who don't fit. The best we can do is take a long, hard look at the trade-offs (and our own motivations and goals), and try to balance what is almost always a set of complex and contradictory needs. Often, the social, emotional and academic needs each pull us in very different directions. Many people on this board find they have to change their plans frequently, as different needs become priority at different times in the child's life.
Will being young for grade in middle school be a problem for your child? There is no way to predict. Will skipping now be to her benefit? That's a bit more knowable, at least. The IAS is a great place to start in thinking through whether acceleration might be a good idea at this time. Familiarize yourself with the acceleration literature (you can start here:
http://www.accelerationinstitute.org) so you have a solid understanding of the actual pros and cons (and not the mythological ones). There's many great threads on this board exploring people's positive and negative acceleration experiences, too.
And a final thought - assuming "North of the border" means a fellow Canuck - most of the educational systems in this country are virulently anti-acceleration. Ask around about your board and province's real-life practices (not policies!), and find out whether you have an opportunity to accelerate now that may not be available to you when your child is in older grades. The deciding factor should of course be her needs right now, but it's important to have as full an understanding as you can as to whether there are doors open now which might not exist later. Good luck!
