In the comic, the woman is arguing that the chip is a reason to not care about death as a way to disarm a threat. Modifying your preferences for game theoretic reasons can be a very sensible thing to do.

It can be. It wasn't this time. It resulted in her death.

Fair enough, but the point seems to be that the woman didn't modify her preferences sufficiently, or didn't fully think through the modifications - in effect, she was bluffing, even if perhaps she didn't realise it.