The Boulder Police messed up the investigation into this case so badly it may well never be solved.
Either that or if a suspect is finally found and charged, I can easily see a defense attorney having the physical evidence thrown out.
It would seem that there is never a "perfect" investigation by any police force.
For my money, she appeared and acted like someone who knew much more than she let on.
For the sake of her soul, I hope that I was wrong.