Nikki: Mike was the expert climber, not you. Mike made the mistake, not you.
MacGyver: You don't understand.
Nikki: No, I don't. I don't understand how you can go on blaming yourself. You didn't push her, did you?
MacGyver: (upset) Yes! Yes, I did. I pushed her away when she needed something from me. I hurt her, and she fell.
Nikki: And there wasn't anything you could do to save her, was there?
MacGyver: It's not as simple as that.