Hiding it requires caring, even if in a negative manner. People like him simply don’t care at all, at least to an individual level. Why should the aristocracy care about the help?
The poor, as an amalgam, are vaguely worth caring about it, taking $50 off of 1 million people is actually worth the effort. After all, $50 is next to nothing. Who would even notice the difference?
In many ways, amoral indifference is far more horrifying than active evil. No one sees themselves as the villain of their own story. Crushing ants also doesn’t make you evil (though the ants will strongly disagree).
Adrenaline with completely fuck up your higher brain functions, unless you’ve trained to cope with it. Its default effects are fight, flight, freeze or fawn. She went into freeze. She likely didn’t want to make matters worse, and couldn’t think it through, due to the adrenaline spike.
A rather dark survey I heard about years ago. Researchers couldn’t find anyone who has self rescued from a submerged car, who hadn’t planned for the eventuality. They had all worked out what to do if that happened to them. Many of the deaths had claw marks on the dashboard, and sometimes they hadn’t even gotten their seat belts off. In the moment, their monkey brain couldn’t even plan that far.