I agree with ideas to keep her out of academic preschools and kindergartens. If you think she might be a bit behind socially, play-based pre-K will be exactly where she belongs. In that environment, the focus will be on fun and learning to function in a group.
Have you thought about advocating for her to skip kindergarten? We did this with our DD5, who's in first and partial second now. She had mastered K level stuff well before she would have started kindergarten. Her brother was in first grade at this school, and I brought her with me every day when I collected him. The teachers got to know her and it was pretty easy to convince them to let her skip K (though they also tested her to be sure, including some end of 1st tests, which led to the second-grade-level work that she does). If she doesn't have an older sibling in the school, you can still bring her for occasional visits to let them get to know her.
Skips are usually easier at private schools, if that's an option.
Val
