Chapter 15:
http://vocaroo.com/i/s1f7HV7cv5tA AND IT'S OVER!
Summary: Our Heroes are delivered to the Royal Palace just in time for Ozma's birthday celebration. I think even the author was exhausted at this point, because nothing much happens until the Wogglebug totally trolls Terry Sue by telling her she has to go home now. She is basically shuttled the fuck off, but not before the Wogglebug gives her a magic key that, when used at the elevator in her mother's office, will transport her back to Oz.
With Terry Sue finally out of the picture, Frogman and Wogglebug retire to the parlor to celebrate their epic bromance over brandy and cigars or something, while reflecting on the lessons they have learned. The lesson largely seems to be "gosh, it's great to be endlessly awesome."
The end! I sing the "It's Over!" song.
Disjointed last thoughts from me: the thing that strikes me as strangest and saddest in all of this is that Terry, who is arguably the author's self-insert character, does nothing. One would think that the whole purpose of writing oneself into a favorite story is to get to be the hero, the Chosen One. Instead, she's a cheerleader for the Wogglebug and seems to get all her satisfaction by being near him, letting him tell her how wonderful and perfect she is, and generally tagging along. I'm sure that if the author herself comes back to this thread she'll make a dozen arguments about things Terry "did" throughout the story: "But Terry was the one who knew about the Pure Waters! Terry did most of the wishing on the Mountain!" But the fact is that she did nothing that couldn't have been done by anyone else. The Wogglebug and the Frogman solved all the problems. Terry...made a necklace.
When you can't even be the hero in your own story, you have problems.