Hermione becomes a Gryffindor prefect along with Ron and befriends Luna Lovegood, but their friendship has a rocky start after Hermione chastises the publication of Luna's father: "The Quibbler's rubbish, everyone knows that." She also lambasts housemate Lavender Brown for believing the Daily Prophet's allegations of Harry fabricating stories of Voldemort's return. Ron and Hermione spend much of their time bickering, likely due to their growing romantic feelings toward one another, but they show continued loyalty to Harry. One turning point in the series is when Hermione conceives the idea of Harry secretly teaching defensive magic to a small band of students in defiance of the Ministry of Magic's dictum to teach only the subject's basic principles from a textbook, with no hands-on practice. Hermione gets an unexpectedly huge response, and the group becomes the nascent Dumbledore's Army. She is involved in the battle in the Department of Mysteries and seriously injured by a spell from Death Eater Antonin Dolohov, but makes a full recovery.
