Forgive me, because I think you've addressed this already, but is this your daughter's first preschool environment? I seem to remember there was another? Has she ever been in an adult-led environment that worked for her? I was thinking about your DD and mine--my DD was seen as a major problem at preschool till she moved up to the 4s and 5s class where a different, better teacher had her. It was night and day.