As previously stated Nancy Grace makes it up. If you listen to over a period of time, it is apparent that she just manufactures information. Listening to her will not help you understand the facts.
I seldom listen to Nancy Grace for obvious reasons. I read the transcript of last night's show, and that is where I saw her multiple times use of "flesh" to denote the DNA on the fingernail. She needs to go...off the air imo.