Scorsese you are correct, one of the younger guys in the crew jumped out of a prison transport bus and tried to escape. I think it was in Kentucky, didn't get far and got another 12 years for his efforts, I believe.
The girl that was killed had guns hidden in her place by the crew and had a general understanding of what they did, so they wacked her out figuring she would be an easy target for law enforcement. To bad, she was only 19 years old.