going back to your original question I do know of some people who were misdiagnosed earlier but then later changed to AS but I think that was because the diagnosis was not as fully recognized as it is now, or at least it is better now. Several parents I know of from around where I live that have older kids with AS started out with a different dx. But as was said earlier, they were given a dx of AS later, but some of the other stuff (ADHD, ODD, OCD etc.) were "co morbid" conditions. I would be fairly confident of how they diagnose your daughter, and if you do disagree, get a second opinion.
_________________
NT mom of two ASD boys
"Be kinder than necessary,
for everyone you meet is
fighting some kind of battle".