She can go "just following orders" route. After all, very few people even care about Nuremberg or any lessons of history.
You, kind sir, underestimate the slavish devotion of the 'News Media' to the administration.
They will take the time and the effort to explain to this generation all about Nuremberg and the trials and how 'just following orders' won't cut it. If they need to do this explaining for three or four days, they will gladly do that.
Then, at the adminstration's whim, they will destroy HRC on that angle, too.