Visible crew/equipment: In every shot where "the kid" is driving the red sports car, you can see that there is nobody in the car with him - Elaine should be in the passenger seat. Even slumped over unconscious, she'd be visible. (00:13:25)
Visible crew/equipment: At the beginning when the mysterious man is at Joan's door, the manager tells him to get away from the door. The camera moves closer to the bad guy. A piece of equipment produces a shadow on the manager's back.
Visible crew/equipment: During the opening credits sequence, where Kathleen Turner is at home with her cat, she opens a glass cabinet to take out a bottle of alcohol. Throughout this shot we can see a reflection of the camera man (wearing a red t-shirt) directly in front of her face.
Chosen answer: She's lost in Columbia and doesn't have access to money beyond what she has with her. She doesn't want to give him everything she has because she doesn't know when she'll be able to get more.