I can understand why everyone misinterprets the lyrics as if they are her own. But honestly, those words are journalist Paul Schwartzman's words. With exception to certain line "At least that's what I'm told". That entire phrase is PJ's. The rest of lines are Paul Schwartzman.

Oh wow. That is effin brilliant!! I would love to see that

Oh I loved the film. I actually read the book after too. I don't know if a musical would do it any justice?