Great she's working on it and that you've got good resources in place. She's still pretty young and you may be surprised with the changes you see over the next few years. Asynchrony does tend to lessen in time.
With the age thing I think it is really hard to get a forever answer as what they answer now may not be what they'd answer when she's 14 and has good ACT or SAT scores in hand and is there with the recommendation of a professor. I would suggest just keeping it in your mind that down the road there may be the possibility that the rule will be different or that she'll have other places to study.
Another idea to keep in mind is maybe finding a mentor for a subject of interest. This can be really meaningful in ways that are far beyond what a kid is going to get in an AP class.
