I wouldn't think "gore" but certainly forensic evidence once torn down and broken apart. I was thinking more along the lines of what would be left behind, around the general area where the event took place, as well as forensics 'transfer' style. And she would STILL have to have been dismembered before entering the chipper, to some degree, I would think?
I was just thinking anything that may have come out of that chipper would have been gathered up and moved. And if she had possibly been frozen, how much blood would there be? And I think LE knows a whole lot, but just aren't saying anything - yet.