fatar, she is playing the Bach Prelude and Fugue in A flat, the Mozart Allegro from Sonata in F and the Grieg Notturno (since we are outside of the UK we can use last year's syllabus). She is a strong player and I have a feeling some of the pain comes from that! She tends to like Rachmaninoff, Khatchaturian, etc. type pieces in which she can pound out the loud chords! She has very good form so I am thinking that practising so much more than what she is used to is part of the problem.
As her exam is tomorrow, I have told her not to practice too much this week (leading up to the exam) and the pain seems to have lessened. She has decided not to tell the examiner about the tendonitis so we shall see how it goes ...
Frankly, I have told her not to sit the exam but she is 17 and is quite insistent! She was going to take the exam last year but broke her wrist one week before the exam and had to pull out. I have a feeling she just wants to get it out of the way as she gets quite nervous and likes to do things as early as possible so she doesn't have to fret about them too long ...
Thanks to everyone for your words of advice! Much appreciated.