I'll offer my opinion...girls are so often overlooked with acceleration, or even identification. You daughter is clearly very very gifted. Clearly able to do advanced work (99% on EXPLORE--an 8th grade normed test). She needs acceleration, and like Austin said, probably more than just one year. People (me included) seem to try to simulate a "normal" experience for these very bright kids...which is not appropriate because they are not "normal". If she's at all willing to do it, I would ask her to try it.