My mom is religious. She also believes in astrology, and that there are people who can harm you with magic. She dislikes gypsies because she believes they cast spells on people and they piss on the vegetables they sell (I am not making this up. This is a common belief among older people here in Greece. Along with the Jews-put-children-in-barrels-with-nails belief).
One day when she was lecturing me for the millionth time about how I should avoid gypsies and people who do magic in general, I asked her what kind of magic can they do anyway? She answered in vague terms, eg. they can cast the evil eye on you and other curses to do you harm but she wasn’t specific on the type of harm inflicted.
So to annoy her, I told her that this kind of magic is crap. Real magic is shooting flames and lightning from your hands, launching magical poisonous arrows, raising skeleton warriors, resurrecting your dead enemies to be your slaves, summoning demons etc.
She just rolled her eyes, spit in the air and went away muttering something.
Is there anything I can do about it? These beliefs are deeply seated in her, repeated numerous times from her parents and grandparents. By the way, my mother is in her early 60ies. I should also mention that my father (who is a couple years older than her) while he grew up listening to the same stories, he simply dismisses them as superstisions.