It doesn't matter who is lying until it goes to trial. I work for lawyers so I am somewhat familiar with the criminal justice system. And I live in NC.
You are correct, but apparently the defense has written statements from the 2nd stripper that contradict what she says now. I think Howlin has information on this.
If they can show that her story has changed then her credibility will be discounted by the jury - if it is not some sort of runaway jury.