I know. And it annoys the piss out of me. Most LE never want PI's involved in a case either. Precisely the reason why some cases never get solved IMO. Because LE doesn't want anyone helping. If they don't find the perp...oh well. Stick it in the cold case files. It's off to write more traffic tickets and investigate hundreds of other crimes. I just think its stupid. LE doesn't have the resources to focus 100% on a case like this.
I look at it like this. LE is here for general law enforcement, to product the public and investigate all crimes to a certain extent before moving on to one of the other hundreds of crimes they deal with.
LE is like the general practioner/walk in clinic of investigations. And PI's/organizations like TES are the out of town specialists. Who do you really want to go see when you have cancer? University Medical Clinic or M.D. Anderson in Texas?
Luv your way of thinking A.C.I., and truly apreciate your diligence in this case. Fortunately, things they are a changin.. LEAs are simply overwhelmed and many are beginning to utilize these available/valuable resources such as TES, PIs, & the media, due to this and budgetary constraints, etc.