Board Thread:General Discussion/@comment-107.219.185.91-20140105042639/@comment-27648912-20140113053140

Not much is known of Kanade's time in the Afterlife as the Anime, Manga, or Track Zero never explains. She could have been there for weeks, months, or even years. Way before Yuri and the others arrived.

'Time doesn't exist in the Afterlife.' That's the only thing I can come up with.