Epilogue:
Hermione and Ron managed to forget their previous relationship and slowly progressed back to their old friendship. Even though things were awkward at the Weasley household with Hermione visiting, they welcomed her with open arms regardless. Ginny was probably the most furious with Hermione, but that anger disappeared as soon as Harry popped the question.
Narcissa Malfoy came to accept the fact that Draco was in love with Hermione, even if she was a muggleborn. She was just happy that her son had finally found the love of his life. After all, Hermione was the smartest witch of her age, a suitable wife for her son.
Hermione and Draco did talk about marriage, but they decided that they weren't ready yet. They knew they would spend forever together, but did not want to stress over another wedding.
Astoria was admittedly upset that Draco had found someone, but she was happy for him nonetheless. She never thought she could move on from Goyle, until she spotted the newly single member of the Golden Trio.
Professor McGonagall received an owl from Hermione. She explained the rest of her story and as a surprise, McGonagall sent them back a housewarming present: a bike for Draco and a broom for Hermione.
Now usually in a story like this, everything is happy in the end, and all ends are tied up. But if you look closely and examine every detail, a question will be raised: Whatever happened to Hermione's letters?
There is a person who has not been mentioned yet, someone who holds these letters close, and awaiting the perfect moment. He keeps them under his pillow, and has read every single word from the mudblood, Hermione.
He has let the anger build up in him, and has not yet done a thing. Until a few months time, that is. The small opening in his cell reveals the stormy ocean surrounding this prison. Now, whoever said that one could never escape Azkaban again?