Every time I re-read this I'm struck by how off-tune his nearly-nonsensical "help" that begins their relationship seems to be ("how about you think of going on stage as just a service to the people watching, surely that will fix your stage-fright!")—if I were in her situation then I'd just have thought, "wow, what a jerk, doesn't care whether I'm afraid, no, it's all about whether other people are happy". Maybe I'm missing out on something here because I don't have Japanese communal values beat into me, but really I don't think the perspective is that different.
Mind, like, everything else is so darned cute it's hard to complain about the whys and wherefores too much.