[she doesn't know what several of those things are, but something about the concept appeals in a tiny voice to her sense of fun, which miraculously hasn't been wrung dry by her decades of study in the Adeptus Mechanicus, an order widely known for being the largest anti-fun zone in the galaxy]
I can see its appeal as a festive element, I suppose... and I am trying to learn more about ancient customs. [she smiles] Very well, then—you've won me over. I'll look at some costumes with you.