Y/N, an 18-year-old survivor from a chaotic life in New Mexico, who suddenly wakes up in the body of Valarie Black—a low-status Slytherin student and the only daughter of Sirius Black—during the tense events of Harry Potter and the Half-Blood Prince at Hogwarts. With foreknowledge of the story but no inherent power or protection, she must adapt her street-smart resilience to navigate Slytherin politics, impending dangers, and the wizard