I have--had--a friend who knew more about this sort of thing, but the way I've heard it, anything normal people would ascribe to magic is ultimately to do with a Stand, the ripple, or some sort of vampire bullshit.

[He looks at the towel in his hand, then back up to her. He should be able to see signs of a Stand if he concentrates, but all he can find is a vague sense of whatever spiritual strength allows her to work her magic.]

Where are you from? Maybe it's some regional thing.