She doesn't sound nervous to me - just suitably anticipating a big day and not wanting to f*** up - same as we all do.
And I never said anything about a 30mile divert - I said a solo student needed to be able to cope with emergencies that could arise in the circuit. Under some circumstances that might mean a diversion. I have no doubt that the OP's instructor will have this base covered.
Which student would be most nervous on their first solo - the one who thinks "if anything goes wrong I don't know what to do, so I'll be stuffed" or the one who knows "I have been trained well to cope with most forseeable eventualities"? Hmmm?
(I'm talking about students spending their own money here by the way - its not the RAF in war-time. And I'd quite like my aeroplane back in one piece too)
H