When Harry's stuck learning Advanced magic from Moony, every other kid can go to Hogwarts. James snaps and punishes Harry to Hogwarts. He's ecstatic, until he meets the Head Girl. For some reason she just knows how to get under his skin. Coincidence?
What if the Horcrux hunt took longer? What if Hermione knew about the seventh Horcrux? What would happen if she knew a way to get rid of them all? The answer is simple, marriage. And who better than to help but Hermione.