Primarily, 'Black Girl/White Girl' is the story of two very different, yet somehow 'fated' girls; for Genna, her 'friendship' with Minette is the most haunting of her life, though it is one-sided and ends in tragedy.
Christianity takes this beating that I really don't understand and yet you can't say anything negative about the Muslims because that's horrible, you can't say anything negative about other faiths.