Slain NYPD cop's widow talks about their "miracle" daughter

Sanny and Wenjian Liu were newlyweds, married for just three months, when she got the call in December 2014 that her husband, a New York City police officer, was dying. A gunman had ambushed Wenjian and his partner.They'd been planning to start a family, she told "CBS This Morning," and she had the presence of mind to plan for the future, even at that terrible moment when she saw him dying at the hospital.Through in-vitro fertilization, Liu's wife delivered a baby girl last week, more than two a