It was not Alecto but Severus who  flicked a Silencing spell at Ginny Weasley, and then replied in a furtive snarl, "As your rambunctious classmate would like to remind you all, Hogwarts has seen the untimely death of its previous Headmaster. Few here feel his loss more keenly than I, although perhaps Miss Weasley thought you had all somehow  forgotten." Ginny was silently raging, held back by Neville, who had both arms around her waist.