Originally Posted by nomadking

So to identify the correct strategy would mean the identifying the situation(which may not have arisen before). As the cause of the upset would not have been easily identified(ie thinking that she would be in trouble for not doing her homework), how could anyone have been sure what to do in that unidentified situation.

Look at the Autistic Society webpage. What does it say she should have done that she didn't in fact do, apart from trying to get an explanation from the girl, which she may have tried to do but failed because the child is autistic.