In Forward the Foundation, there is a pivotal scene involving Dors:
When discovering that Tamwile Elar has been secretly plotting against Seldon with the help of the military junta, Dors is seemingly overpowered by a device created by him which reveals her nature as a robot. Unbeknownst to Elar, though, she is able to use the last of her forces to overcome and strike him to death. The point is that by doing this, she breaks the laws of robotics.
My question is why is she able to act upon this in the first place, given the implications?