Your DD sounds a lot like mine (nearly 8), except she hasn't got a diagnosis.
We received MRC and LRM and all I sent was a report from her initial appointment with the paediatrician, a letter to say she had been accepted on the ASD pathway and a report from an OT sensory assessment that I arranged privately.
I didn't have any evidence from the school (and they didn't contact them) nor anyone complete the person who knows them bit.
I was however very detailed and specific in my answers and wrote an additional 3000 words at the end in answer to some of them.