Hunter tearfully apologizing to Becky for getting them into this situation and for having an affair with Dan.
Becky realizing that Hunter has been Dead All Along and that she is trapped on the tower all alone.
Becky having to conceal her phone in Hunter's body for cushioning for when it hits the ground. She apologizes tearfully before pushing her body off the tower.
The ending, when Becky tearfully reunites with her father.