Luckygirl3
Thank you for that link Kathy - very helpful.
I am very aware of the factors that might have inclined her in this direction - it is very hard being the younger sibling of someone with a brain like a planet and limitless exceptional talents!
We have experience of sibling GC with very different capabilities. The less able academically child became very conscious of his shortcomings at school, and so, with an all round effort (a superb school teacher, parents, grandparents (both sides) and a good local junior football trainer), we encouraged success in other areas, and this has helped his self esteem hugely.