Gifty’s refusal to comfort her mother at Nana’s funeral is a second piece of evidence disproving her earlier belief that she was a merciful child. It seems that, for a long time, she has refused to show her mother compassion. The funeral is also the point at which she stopped believing in God, although she doesn’t yet reveal the specific reasons for her loss of faith. When she stopped believing in Christianity, she found her teacher’s attempts to square faith and science childish, but as an adult, she’s become more willing to acknowledge the limitations of her own knowledge (and human knowledge generally). This is one of the ways in which religion and science are similar: they are both responses to the limitations of human knowledge.