My sincere condolences for your terrible loss. I have lost a teenage daughter myself. I hope the Police never quit on this because I think its ultimately solvable due to many given facts already, large strong mysoginistic local possible pair perhaps offered a lift and known to her. Knowing how far away the Apiary is would also define if he drove or not; in all likelihood psychopaths like this covet what they see often, and you more than likely have crossed paths with this "hero"; so when you get a gut feeling that equates with your heart and mind, heed it. The monster likes flags, symbolically and otherwise and they mean something to the skunk, kites sails penants Jock? etc.
I'm so very sorry for you all.