Just before the door latches behind her, she catches the sound of Malfoy throwing a chair with a guttural roar from the chest. She flinched and hurried down the hall, back to Slughorn’s party where she eventually ran into Harry. She blames Cormac for her disheveled appearance and does a loop to search for Ron. Seeing him pressed against Lavender whose hands were naughty after multiple fireball whiskeys, Hermione decided it was time to bail.