MrsForgetful, your message touched a chord and I really hope you don't mind me copying you.
For anyone who has an Asperger's child, or knows about the condition: can it be so mild that the symptoms are clumsy speech, naivety, and inability to follow group social cues (though OK one-on-one or when directed)?
So: no insistence on routines/rituals, no single-track obsessions (and instead lots of different interests which change), no sensory problems, loads of interest in stories and making up own (and very happy when other children join in)?
Ds is nearly 5.