She was quick to say goodbye to her parents. Neither did Bellatrix spend time looking over her sisters, since she was going to have to look at them for the entire year anyway.
She briefly closed her eyes, taking a deep breath, the smell of poor muggles tickling her nose.
Once on the plataform, she did't bother looking at the other students - not seeking anyone, not interested in any of them. "Let them seek me," she silently says, barely moving her lips.