Has she looked at some of the other (less far away) options for early college? There are actually quite a number of very prestigious and well-regarded programs specifically for very young college entrants--
Hint: UW has a program that we looked at-- HARD.
We're not that far from you.
Added:
Another path to consider is admission to a conventional college setting a year or three early, but within the confines of a specialty program, like an honors college.
That is the route that my DD ultimately settled upon. Our other realistic option was Reed, but that is not really a campus that I want my 15yo on.
If you think that the UW program is one to chase down, you might want to think about a jump over the river to establish residency about 2-3 years before she gets there. We hadn't quite anticipated JUST how bad the differential w.r.t. out-of-state-tuition would be-- it's a difference of +20K a year now.
One tip for your DD:
http://www.saturdayacademy.org/aseThis is
the best program. It was an
amazing experience for my DD when she participated.