It All Comes Back To Snape: Book 2

Hermione has gone back in time to stop the second rise of Voldemort, but she ended up years further than she intended. Severus has just become a Death Eater even though he knows his new Lord is anything but a good person, because it was expected due to his hushed family connection to the Malfoys. But everything changes when a girl with a mission literally falls into his arms.