Watch my link of the Californian ride. What does she say there ? Maybe it's the same that she says in French in Paris ?!
I think a video of the French version could help more, because I could show it to a native speaker, but anyway, when I compare what I wrote above, I would say it's similar to the English "Magic mirror on the wall, in this disguise I fool them all", I just left the magic mirror part out. So I think it should be "miroir magique (followed by words I don't know or at least I don't remember), je suis déguisée, le tour est joué".
I never really understand what the witch says in the other scenes, I only get the word "pomme" which means apple. "pomme délicieuse" or something, but I don't really remember that "I such a partner" line.
Has anyone a link to a video of the ride in French?