Well, I agree with you on both counts. But I didn't leave that video there to hurt her feelings or to kick her down the stairs so to speak, because I believe that Diana herself would appreciate great music from great musicians as well.
In fact, that's why I choose a gentle, sweet song instead of one of the more impressive or more demanding pieces being played by the likes of Claudio Arrau, or Pascal Roge', or others of such caliber.
I think Diana is a sweet girl, and if I knew her personally I would always be encouraging to her.
To me, anyone with a desire to learn something worthwhile should be encouraged, and not discouraged.