The obvious thing seems to be to ask the school to look at her paper. Have you tried that? Outside chance (tiny) that her paper was given to her without the composition? In which case you're in - though I imagine the marker would notice. And if she did overlook it in pressure then that would help an appeal case.
I get muddled up with all these acronyms - this is not a private school is it? I've never heard of state schools using compositions at 11 plus level - I wonder how they mark them.
Henrietta Barnett has two stage test:
There are two parts.
Round One: Approximately 70 minutes – verbal and numerical reasoning.
Round Two: Approximately 70 minutes – English and Mathematics.
English – questions to test comprehension and creative writing skills. The writing task may be two shorter pieces of writing or an extended piece, which can be a creative task, a discussion or opinion or a response to a scenario. Mathematics – questions to test problem solving skills
All tests are appropriate to Key Stage 2.
Part 1 ( Verbal Reasoning and Numerical Reasoning) is set by CEM Durham University
Part 2 (English and Mathematics) is set by the school
SCORES The results of part one will be combined, standardised and placed in rank order. The top 500 candidates will then have their English and Maths tests marked. The results of all 4 sections will be combined and placed in order of rank.