My 5 yr old son was evaluated for many of the same reasons as your daughter and right around the same age too. He was 3 yrs 6 mos (and a few weeks if I recall correctly). Ultimately he tested in the 99-99.9% depending on area, they tested using the DAR-II.
He is in K this year and is easily able to do most 2nd grade plus work but he is expected to do the K stuff - with the exception of phonics group he does higher level stuff like grade 1 comprehension or Accelerated Reading quizzes.
I in October met with the principal to get some acceleration going for next year. They are also supposed to be setting up a SST meeting (student study team) so we'll see if we can't get something changed for this year as well.
He is more and more interested in homeschooling though as school has lost most of its appeal to him. He mostly likes his teacher, some of his friends, and recess, lol. He does only go 3 1/2 hrs a day though for K.
I think I may have to wonder about my dd4 as well. She was more than capable of going to K this year at almost 4 (birthday is Sept) but she is much more easygoing so if they keep 1/2 day K I might just let it slide.