The Devil Wheel symbolizes destruction or at least, that's what those who had studied it the longest felt.
It took thousands of years of constant study to come to such an ominous conclusion so few were willing to argue against it, especially when shown the evidence to back up the claims.
Mystics of this Wheel that favored women more than men, were usually considered the cause of most supernatural catastrophes that affected the male population.
In that regard, perhaps the Abyss Wheel was better in that it did not discriminate in its destructive tendencies.
In any case, like several others in Judah who were forced to learn the basics of mysticism while growing up, Nadia was also aware of the symbolism behind the Devil Wheel.
It was a cross she had to carry, one that she knew would constantly force her to do things that she felt were questionable at best and terrible at worst.