Another thought occured to me on how at least *some* of these "internalizations" could have happened pretty innocently. When I write, I write the way I talk. At the same time, though, the things I read and watch on television affect the way I talk. I can imagine someone really liking certain phrases in a book and mentally earmarking them as things to say (like the masochistic cinnabon thing, or having to be either smart or pretty) and then, after saying them for months or years, forgetting that they didn't make them up. This doesn't really work for all of the examples, but for some of the ones that are based on a "catchy phrase," it's believable...
The question, I guess, is whether or not it's believable that she could have done that with the catchy phrase ones, and then just plain internalized some of the others. I'm still somewhat skeptical, but I also can't bring myself to believe that someone in her position would plagiarize with so little to gain, or that, if they decided to do it, they'd do it so BADLY.
On another note, it's come up in the articles that KV shares the copyright to Opal Mehta with 17th Street Productions, her book packager. I think this is fairly standard with book packagers (maybe?), but it could put them into hot water as well...