At first, none of that makes sense to her. But as she thinks about it ...looking at the human-only propaganda of Humanis, looking at what Natascha, former team member and Orc, told her about the internment camps for orcs and trolls that she was born in, looking at how Quebec tries to exterminate shapeshifters, she can see where Ryoji is coming from. Looking at how harshly regulated magic is, too. The dictum about shooting the mage first is different, probably, but it still speaks of (healthy) fear.

"So everyone just managed to hide the moment they showed up?"

Because she can't really believe that people would just forget while people and critters are still around. Things don't just turn into legends and myths within a year or two of keeping your head down, and a she figures that a lot of people and critters needed to keep their collective head down.