Hermione Granger and the Tablet of Blood

It's been 11 years, and Wizarding Britain has moved on. Hermione Granger is doing what she does best: researching and developing magic. It would be the perfect life, if she didn't feel so disconnected from her friends, all getting married and having children. So when Draco Malfoy turns up with a strange request, she is sceptical, but how could she refuse? Non-epilogue compliant.