Crime of opportunity or not, the biggest mystery surrounding this entire case is motive, and has been since the beginning. If we only knew what the motive was behind this attack, all the dots would start to connect and a clearer picture would emerge.
I still can't figure out how we get from the Park-and-Ride to the culvert, and then back to the Park-and-Ride.
Or.....From the Park-and-Ride to ???????? , and then to the culvert.
That is exactly what Commander Pickard mentions in one of the first press releases after she was found: I want to know how she got from here to there.