The most famous forms of Holocaust denial and revisionism tend to focus on Jews, casting doubt, for example, on how many were exterminated in the camps. But denying the impact the Nazis had on the other groups they targeted, including queer and trans people, disabled people and Romani people, is still Holocaust denial. Maybe someone should tell J.K. Rowling.
Sadly, for those involved, society at large didn’t really give a shit enough to teach about every group attacked by nazis. From the history books openly available at the time in my country at least, post communist era, Jews were the main victims, gypsies second and the handicapped or malformed in third place, as per importance in extermination.
That’s it.
I doubt her education was better than mine and she seemed willing to accept the updated information as explained in the article, so it’s not that she’s completely rigid.
And to be unbiased, “deviants from the norm” were attacked in every major country, before and after the nazist period. Book burnings are common enough even now. So linking this exclusively to the Holocaust is in poor taste and denies it being a global issue that has little to do with Nazism itself but rather the causes that elected its rise.