With regard to Hannah's question as to what is the relevant sort of degree for someone with ambitions to fly professionally, I would have thought university maths and physics is far too advanced for what comes up in aviation examinations. Perhaps some ATPL's could comment.
I would have thought that, for example, engineering, particularly aeronautical engineering, might be more appropriate. But if Hannah does not really like maths or physics, three or four years studying at that level is not going to be the most enjoyable experience.
And anyway, all this is before we know whether she's going to get motion sickness or not.
By the way, if Hannah's mother thinks that gliding has got nothing to do with flying, I don't think she is the best person to give advice. Glider pilots fly, yes fly, up to hundreds of miles in one flight, fly for hours, and can gain height using air currents from a launch of 1000 to 3000 feet up to 20, 30, or even 40,000 feet. It's a bit like saying that someone who goes sailing knows nothing about boats.
Chris N.