I feel the same way sometimes, too! In any case, I'm pretty I know what you were getting it at, I just didn't want call attention to it, because it could've led to even more confusion!
Anywho, Charlie thinks this might be the princess for UP? Hmm, sounds plausable.
Well, if the rumours are true and "Up" is going to be an adaption of 'Don Quixote', then I think the princess will be the love interest of the hero rather than the main character, since apparently the main characters are the 70 year old man and the young woodland ranger according to the plot synopsis.
"The difference between insanity and genius, is measured only by success"
I mean a hero (like Snow White,Cinderella,Aurora,Ariel,Belle,Alice,Pocahontas Mulan and Giselle)
and not a main female lead (Nala,Jasmine,Dory and etc.) or a damsel in distress (Fiona,Angie and etc.).
Might be from UP? that sounds interesting, it would make sense since that is the only other thing that has circulating rumors out that aren't that solid. The only things that contradicts is that if it's supposed to be Don Quoxite then why would a past article claim that she was scottish when the story of Don Quoxite is spanish. Could they have adapted the story for a different region or time?
Actually,there is one thought I don't think she"ll ever be a Disney Princess,it's Mira Nova from the Buzz Lightyear series,she is a princess (and alien).