After a dark curse, the wizarding world is left barren. Facing extinction, the Purebloods subjugate the muggles, searching for the rare muggleborns—the only witches able to reproduce. From the moment Draco saw Hermione, he knew two things: she belonged to him, and he'd destroy anyone who tried to take her. (Inspired by the Prince of Egypt)

Snape's first question to Harry about wormwood and asphodel was not just a potions question, but also a message, which in the language of flowers means "I bitterly regret Lily's death". Harry never gets the message behind the question, but what if Hermione does, years later? Not canon-compliant, but canon-inspired.

Hermione is in her thirties when she starts having bizarre dreams. She can never remember them, but the one time she does recall her dream, it is only because she wakes up to find someone in her bed…someone that isn't her husband…someone that died seventeen years ago. And he is very much alive. SSHG

Harry Potter is dead. In the aftermath of the war, in order to strengthen the might of the magical world, Voldemort enacts a repopulation effort. Hermione Granger has an Order secret, lost but hidden in her mind, so she is sent as an enslaved surrogate to the High Reeve until her mind can be cracked. COMPLETE.