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. Harry Potter and the Half-Blood Prince New Potions professor Horace Slughorn invites Hermione to join his "Slug Club", and she helps Ron retain his spot on the Gryffindor Quidditch team when she casts a spell on Cormac McLaggen, causing him to miss his last save attempt during Keeper tryouts. Hermione's feelings for Ron continue to grow and she decides to make a move by inviting him to Slughorn's Christmas Party, but he romances Lavender instead in retaliation for his belief that Hermione had kissed Krum years earlier. She attempts to get even by dating Cormac at the Christmas party, but her plan goes awry and she abandons him midway through the party. Ron and Hermione continually feud with each other (Ron is upset with her because she set birds to attack him after seeing him and Lavender kissing; Hermione is mostly mad because of her growing jealousy) until he suffers a near-fatal poisoning from tainted mead, which frightens her enough to reconcile with him. After Dumbledore's death, Ron and Hermione both vow to stay by Harry's side regardless what happens. A minor subplot in the book is that Hermione and Harry form a rivalry in Potions, as Hermione is used to coming first in her subjects and is angry that Harry outperforms her undeservedly by following tips and different instructions written in the margins of Harry's potions book by the previous owner. Hermione is also the only one of the trio to successfully pass her Apparition test (Ron failed, albeit barely, and Harry was too young). Harry Potter and the Deathly Hallows In the seventh and last book, Hermione accompanies Harry on his quest to destroy Voldemort's remaining Horcruxes. Before leaving on the quest, she helps ensure the safety of her parents by placing a false memory charm on them, making them think they are Wendell and Monica Wilkins, whose lifetime ambition is to move to Australia. She inherits Dumbledore's copy of The Tales of Beedle the Bard, which allows her to decipher some secrets of the Deathly Hallows. She prepared for their departure and journey by placing an Undetectable Extension