[Well, there are no coins, nor mushrooms, or fire-flowers or anything from Peach's home there either, so she knows just how frustrated Kazooie is, in that aspect.]

The strange thing is that, we usually went through doors to get to the place where the next Pure Heart was. I don't remember falling asleep and getting to a new place. [Well, she was, technically, dead, so maybe things worked different now.]

But, you are right. A puzzle without a solution seems rather pointless to me.