That's what PC culture does. It strives to erase real history and retell it using its own narrative.2019 is such a dumb year because the Left and Centre-Right has managed to separate Nazi and German into two separate things. Even 20 years ago, people would have used the phrase Germans, not Nazis, to talk about the Second World War unless specifically referring to Nazis like Hitler, political officers or the SS.
Since Megan herself is German, she possibly was interested in it for cultural reasons. The 3rd Reich was very aesthetically German. There's young Russians today that admire the aesthetics of the Soviet Union that never experienced it but not the ideology because the USSR was culturally very Russian in character.
There's also the possibility that she was interested in bands like Rammstein or metal bands that used SS-esque aesthetics too partially for the shock factor.
Jordan Peterson collects art from the former Soviet Union. The ultimate individualist capitalist likes to collect communist artwork because he finds it ironic to own.
I don't think it's easy to tell what a person believes in just from the kind of artwork or trinkets they collect. Maybe the only two broad categories of people who are into collecting WW2 German stuff are people who really appreciate the history, or LARPers in skull masks. All the cool Nazis are into smug green frogs now.