Its possible that the goddess Hylia is the goddess of time itself and if Zelda has her blood it might be that she just locked Ganon and herself in stasis.
Zelda has sealing magic too, time seems to go out the window when sealing is involved. Ganon didnt age when he was sealed away so it may be the same kind of deal.
Zelda was waiting for Link to return with the Master Sword to stop Ganon so i think its most likely her sealing magic is more like stasis power.
It could be, I guess. I don't think Ganon ages in the same way, though, being a beast/entity.
I just thought throughout the game that Zelda was going to vanish after the battle, like the king and others did.
I always chalked it up to her sealing powers. It seemed like she didn't have a physical body at all until after the battle, that's probably also a factor.