@SculptorDad: I going to say something that should have been said during this application cycle, but no one did. I don’t believe the problem with your daughter’s application can be fixed by JBS or any attempts to round out her ECs or sports deficiencies. Your daughter is not a candidate for high school, BS or otherwise; she is a college student more than halfway to a degree. You are asking boarding schools to admit her (with FA) for non-academic reasons; you even said as much in your posts that you and she would be fine if she’s under-challenged academically because she’s looking more for the BS experience and social maturity opportunities than a high school education. That is not what these schools are for, and I believe her waitlists were soft rejections rather than encouragements to try again.
She sounds like a wonderful, artistically accomplished young lady, but she is not a candidate for high school. The older she gets and the more CC credits she accumulates, the less desirable she will be to the BS communities you are looking at. The mission of a prep school is to prepare students to do well in college. Your daughter has already proven herself there and is more than halfway to an undergraduate degree. Her “resume” tells these schools that she doesn’t need them; she has bypassed high school and is well on her way toward a goal that most BS students have not seriously begun (nor should they).
A couple of posters have tried to tell you gently to consider early college, like Bard at Simon’s Rock. I believe she might be an attractive candidate for one of those programs that will view her college credits as proof that she could be successful as a young college student.
If bypassing high school was not her goal by earning so much college credit, that’s unfortunate as I believe she just cannot be viewed as a student who would benefit best from what college preparatory programs are designed to offer.
If she wants to live away from home for a while, then the JBS offer she has in hand will give her that experience but I doubt it will make her more attractive to the traditional boarding schools next cycle.
I wish both you and her well in this upcoming year as you decide what to do.