The Slytherin fire is never warm enough, she complained to herself.
She heard the creak of the Slytherin doorway opening to reveal several fifth-year boys walking in, chatting gaily amongst themselves. She froze and immediately fixed her neck downwards, pretending to be staring hard at her book, while in reality she was watching them all intently.
She sucked in a shallow breath. Ohh . . . it's Rigel.