Both Rosemary and Fern suffer as a result of their unusual upbringing together. Just as Fern loses her sense of affinity with other chimpanzees, so does Rosemary lose hers with other humans. Furthermore, Rosemary has trouble adopting the behaviors that in human society are seen as “normal.” Even the fact that she is eventually able to behave in a normal human manner is somewhat tragic, as it involves the denial of her true personality and further distances her from Fern and her past.