dear Karen,
You have done your best to save your Jewish friend, but seeing as that hasn't yet worked, and you care so very deeply for her, I will let you in on a little-known tradition within the missionary community. I'm afraid it has fallen completely out of style over the last few centuries, but it is nonetheless still dreadfully effective -- for example, despite what all the books you never bothered to read have had to say about the matter, it's actually why Emperor Constantine converted to Christianity.
But where were we? Ah yes.
You have done your faithful best to educate your Jewish friend (hereafter referred to as DIRTY JEW), but she has avoided you -- more accurately, insulted you -- at every turn. The only proper response now is for you to file a petition 927B- with an official representative for the local Port Authority of your designated faith; this will ensure the request is put to a vote.
If your request receives sufficient support to be passed, your Deity of Choice will be duty-bound to challenge your Dirty Jew friend's Deity of Choice to a match of strength and wits within the squared circle. Should your Deity of Choice win the match, he/she/it/twee/plop/moo then becomes the default Deity of Choice for the losing party (your Dirty Jew friend).
I'm afraid there is only one catch, though it is a big one -- in the event that YOUR Deity of Choice loses that match, you would be bound by all the Laws of Elder Funk to adopt your Dirty Jew friend's Deity of Choice as YOUR OWN, thus no doubt becoming some other poor missionary's Dirty Jew friend. I thnk you'll agree with me, however, that the odds are stacked in your favor as we both know that our Chosen Deity, the good lord himself, Jesus Christ, Esq., is the only REAL LIVE DEITY in all existence, and that when your Dirty Jew friend's Deity of Choice shows up, it will only be so that we can reveal to the world that what she worships is actually just two dogs humping madly inside a festering horse-carcass dressed up in a sheet and a SpongeBob SquarePants Halloween mask.
In other words, the tradition is foolproof. It worked on the Red Indians of the Americas, and it'll work on your Dirty Jew friend. I'd wish you luck, but that would be completely redundant, now wouldn't it? :))
Yours in Snackdom,
-- Maguffin