I have been suspicious that one reason she and G did not go to the car at the same time is that she had some things she wanted to take along. One being the backpack she is seen carrying and another being the oddly shaped elongated case she had. Also once G is in the truck, she exits again and retreats out of sight behind the truck. I am suspicious of several reasons, perhaps leaving one or more phones behind at that point or putting another item(s) into the bed of the truck under the covering back there. (hence why she may have backed in)