Maybe she will be possed by Ganon again, there's the possibility that a spirit helps her and she goes to a mission to get the Triforce or part of it, like Skyward sword, but we could play as her(maybe only after finishing the game as Link?).
You know how when you start up the game(at least in the Wii U) there is this image before the start screen?
What if we have one with Zelda's? As if we play with her point of view/perspective?