There were so many interviews and clips yesterday and today, but I'll try. I do remember she said that when it hit, there were a couple 'explosions' loud noises...she said it was gone in seconds. If I remember correctly she said when she first realized that it was flying too low and was going to crash she tried to call 911 or someone.
They didn't stay with her very long, and went on to say that they had hopes of getting the box from this crash and hoping that the terrorists didn't flip the circuit? to it. Disable it anyway. Which might be why info on that crash is classified at this point. I don't know.
The Airline Pilots Union negotiated an agreement with the airlines some years ago, that the black box could be erased, but only on the ground.