Who is Evangelica from Coyotes: A Journey Through the Secret World of America's Illegal Aliens and what is their importance?

Evangelica was the young Mexican girl who decided to go with Jesus as his group crossed the American border. She was determined to leave Mexico, likely because she was enamored with the idea of the wonderful life she expected in America. Ted found her diary after she returned to Mexico, and her entries seemed to indicate that she was lonely.