Voldemort is defeated during the Department of Mysteries Battle; there are no horcruxes. Voldemort's defeat doesn't save Hermione from the horror that is Antonin Dolohov's sexual sadism. She tries to heal, but she feels horrible for everything she does. Her salvation comes from the most unlikely person.

Hermione Granger is not simply a muggleborn witch, she is also an Elemental witch. When she returns to Hogwarts, she chooses not to live to fit in with wizarding Britain. This is the adventure of Hermione living her most powerful life, but still being a reckless Gryffindor while tuning into her Slytherin antics.