. I don't know why the girls would have stayed idle on the east end, this makes zero sense to me without some sort of physical barrier or serious threat.
They were obviously directed, "Down the hill," from the east end of the tracks and didn't run initially, but were obviously spooked enough to start snapping pictures. This makes zero, absolutely zero sense.
I agree with the the logical contradictions, but I think there could be possible explanations:
- In the end, humans are not always logical. Rather, we can make decisions of friendship, fight or flight based on a lot of subjective impressions.
For example, as you pointed out, the girls were un nerved by the man and took his photo. Perhaps their initial apprehension was subjectively mitigated by one of the following: The approaching man was not large, thus appeared less dangerous.
Or, the man had local mannerisms, dress, accent etc, was thus subjectively familiar. Maybe the man did not appear to be angry as he got closer. Or, the girls simply worked their nerve up and did not want to appear to be intimidated by his approach.
- A co-opted meeting. The girls were prepared to meet somebody there to make a promise, an apology, provide information etc. etc.
BG's approach un nerves them- they were expecting to meet with say, "Tommy". They take his photo. But don't fully want to leave the meeting spot.
As BG approaches, they then realize that BG is somewhat familiar. Perhaps he is "Tommy's" uncle from a gathering two months ago. Or with a younger BG, he is "Tommy's" older friend or cousin met once in the course of hanging out.
BG approaches the victims, informs them that the actual meeting will be "Down the hill....".