Xemnas figured that if Malifecent was brought back to life that the number of heartless would increase meaning that more hearts would go to KH.
So he had Roxas and Axel go to Hollow bastion and free her raven. The raven found Malifecent's cloak and as w saw in kh2 she was brought back to life.
So she was just a pawn again? It's kind of funny she ended up turning on Xemnas, even though it was by his means that she was brought back to life. I really hope that this is included in Days.
Why would they just write it for no reason? :v
A mistake, I guess.
There's been lots of rumors floating around about worlds, lately. I find this one more likely than the Snow White one, though.