Hello again, Justine.
You have two reasonably good scores.
There are some weaknesses:
You have no extenuating circumstances (but the panel will appreciate your honesty, and be grateful for not being subjected to lame excuses!)
The CAT VR is not high enough - you could try pointing out that your child is stronger on the Quantitative side (and hope that they don't linger on the NVR!).
The "working at" levels look fine.
Some of the comments are superb and worth reading out to the panel:
"pursuit of excellence which will make him an excellent candidate for GS ..... Very able, ...... and has a natural aptitude ...... excellent comprehension skills ..... Sets high standard, grasps new concepts quickly, ......achieves top marks in mental maths and multiplication tests ....Clearly avid reader, reflects in quality of written work..... Produces high quality work, fast pace of lessons suit DD ........"
(Don't dwell on things like commitment and self-motivation.)
(Are the sex changes also the result of stress?
Your strongest point is probably the accuracy of the 1:1s. I suggest you point out to the panel "1:1 predicted by school=12/11 (10 in fact passed exam and 1 has got through on appeal)"
Overall I think you have a good case and you should go into the appeal confident that you have some strong points to make. Unfortunately my view counts for nothing, and what matters will be what the panel thinks .....