My friend Robbie will adore this game. He's obsessed about Princess Peach.
As for the emotions, that's an awesome idea. I wonder if there are only those four, or if they'll have more than that. I'm willing to bet just those four, since they're pretty broad, but who knows? Either way, this emotion idea provides lots of possibilities.
Princess Peach does seem rather confused and uncertain sometimes, but on the whole she seems to know what's going on. I mean, she runs an entire kingdom for one thing. She strikes me as being very innocent, and that can come across as ditzy.