If she left Bar Harbor at 8:45pm then the 7 mins would put it at 8:52pm that she should have been seen going back down the street.
9:16pm was JG last text to BD and she did not reply.
And my question is, how long would it take to get from the strip to the area where her cell phone last pinged? If JG sent a text to B at 9:16, the perp(s) could have tossed her cell phone into the water then near the cell tower that her phone last pinged at.