Visible crew/equipment: In the shot of Rachel driving up the street with Aidan just before they arrive at their new house, the car breaks right in front of the camera for a few seconds. In this shot you can clearly see the camera reflected in the left corner of the car. (00:07:15)
Visible crew/equipment: When Rachel pulls up to the crime scene where Jake was killed, as she gets out of the car you can see a grid of set lights reflected in the car window door. (00:12:30)
Visible crew/equipment: When Rachel starts to climb out of the well water onto the well wall, in the closeup of her left side as she lifts herself out of the water, a long white cord/wire hangs straight down her left side from her shirt to her pants. (01:36:05)
Answer: It was the only way out. She followed Aiden's voice to the cliff and kept hearing it from the same direction. She knew she had to jump off to get back to the real world.