Bellatrix Black is mean. Bellatrix Black is passionate.
She marched through Honeydukes as if she owned it. She snatched lollies out of people's hands. Anyone who opened their mouth in her presence would get a cold, icy glare. Her younger sister, Andromeda, was avoided, thanks to her sister. Bellatrix practised dark arts every day; she was passionate about it. Her poor sister Andromeda had no friends, because of Bellatrix's reputation. Andromeda was miserable: Andromeda was nothing like her sister. Bellatrix didn't do any other activities such as Care of Magical Creatures or Divination.
Bellatrix Black does her own thing. Bellatrix Black is not a family person.