Oooh! Lots of crossposting!
Here's the draft of the email - not yet sent as DaddyRandom hasn't had a chance to look at it. Any suggestions from the Wisdom of the Hive will be considered.
'Dear Miss xxxx
Thank you for the recent reports re our twin daughters, Random and Moment Random-Moment, both Year 8 xx.
Unfortunately you have presented identical reports for both girls!
Comment
'Random is a keen artist. She has produced some lovely pieces of work this year; her drawings are strong and her paint work is good. Her coat of arms showed a range of collage materials it's just a shame that it didn't get completely finished. Her recent extended learning task was excellent, her research skills are good and her presentation is fantastic. She has shown a good level of maturity by being organised when having the choice to use a range of materials for her collage in the Art Room.'
Target
'Random should aim to work a little bit faster so as to get all work finished to the best of her ability.'
and
Comment
'Moment is a keen artist. She has produced some lovely pieces of work this year; her drawings are strong and her paint work is good. Her coat of arms showed a range of collage materials it's just a shame that it didn't get completely finished. Her recent extended learning task was excellent, her research skills are good and her presentation is fantastic. She has shown a good level of maturity by being organised when having the choice to use a range of materials for her collage in the Art Room.'
Target
'Moment should aim to work a little bit faster so as to get all work finished to the best of her ability.'
My own instinct is that this report is actually about Random, although the comment about being mature and organised makes me wonder 
DaddyRandom and I hope to see you at the parent's evening on March 28th and we would be grateful if you could send us the correct report for whichever girl is currently missing so that we can have an informed discussion.
Yours sincerely
Randommoment and DaddyRandom.'
Not cc-ed to anyone.
Is it okay to use a smiley? - I just want to make it clear I'm being slightly jokey - little Random is one of those children who loses everything and is never on time for anything, whereas little Moment is terrifyingly tidy.