How does Sorayas father react to her infertility? How does he react to adoption?

When they told Soraya's parents, General Taheri and Khanum Taheri were disappointed. The general urged them not to adopt, most of all because Afghan society depends on the line of succession, which the act of adoption obliterates. Amir thought privately that his and Soraya's infertility was punishment for his betraying Hassan so many years before.