0 gay mayor. that s christine quinn on the grill tomorrow. that s all for us right now. anderson cooper starts right now. breaking news tonight. a little girl s battle for a life saving lung transplant just got some help, not from a doctor, but a judge. you ll see and hear her reaction when the ruling came in. also ahead tonight, only on cnn, exclusive video showing the first lady, michelle obama handling a heckler, how did she handle the heckler and what happened? the white house gave her high marks. watch and decide for yourself. later, the moment you helped make possible. our viewers. a hero tonight reunited with a woman whose life she helped save in the boston bombing. we begin tonight with breaking news, a story we ve been following closely. a 10-year-old girl s battle to live. her name is sarah murnaghan. cystic fibrosis has destroyed her lungs. without a transplant, doctors say she will die possibly within weeks. sarah has been waiting for more than 18 months for donor lun