Thanks, everyone, for your insight. I think it's important to have an assessor with experience in these tests; DD is pretty shy around strangers and while I don't want anyone to "coach" her, I do want to get an accurate score, so we can figure out what the heck to do with her next, and someone with experience would know how to evaluate her answers properly.

That institute in Denver I mentioned does a very thorough intake and then consultation following the actual assessment. The Cadillac option, to be sure, and I suppose that's the best thing to do, just so then we know for sure where DD is at.