what us "the secret" of sorayas past and how does amir feel about it? chapter 12

When the Taheris lived in Virginia, she ran off with an Afghan man. When her father found her and dragged her home, she found out that her mother had suffered a stroke that paralyzed the right side of her face. Amir was slightly upset to find out that Soraya was not a virgin because he was. At the same time, he knew that he of all people could not hold someone accountable for her past mistakes, so he told Soraya that nothing could change his desire to marry her.