something to keep in mind besides the fact that her fear and ignorance probably made her more rude and aggressive than she might normally be... she may also have been genuinely afraid for you. in our "tolerance" it's not always helpful (though, i admit, often a good time) to swing the pendulum the other way and be so sure that all motives can be attributed to those evil, nasty, power-hungry christians trying to take over the world. she's just one girl, after all!
that said, she had no right to say that to you, and her assuming a hammer blow of narrow-minded fearmongering would sway you was misguided, at best. but it might not hurt to try to take it as a desire to help you or keep you from danger. that
doesn't mean you have to listen to her, of course (and i don't think you
should, and for what it's worth i know plenty of christians who read cards (some of them on this forum, as long as we're being even-handed and fair), and they certainly don't seem taken by demons to me. portals to hell don't just open up willy-nilly.
(the large hadron collider may change all that, but not this week, and that's nothing to do with tarot anyway.
)
ignore what she said, and by all means feel free to write off her and her negative energies, but do it thoughfully... think about where she may have been coming from, why she cares whether you invite demons into your apartment or not.
and beware the cottage cheese. eep!
ahem. just my two cents, for which i shall likely be thrashed. *grin*