'Mom Oprah': Winfrey Opens Up on Emotional Journey with First Graduates

They lovingly call her "mom Oprah." Oprah Winfrey may not have biological children, but thanks to the first graduates of the Oprah Winfrey Leadership Academy for Girls, she said she now understands the trials and tribulations, as well as the joys, of motherhood. "We're texting all the time," Winfrey told "Nightline" in an exclusive interview. "I was on the phone last night for an hour with one of them." The maternal bonding began five years ago, when she handpicked 72 underprivileged girls...Full Story