LANE: No, you’re thinking your mom, here, Rory. If I said that to mine, she’d start waving a crucifix at me.
A crucifix is a cross with an image of Jesus on it, as distinct from a plain cross. The word comes from the Latin for “fixed to a cross”. It’s a principal symbol in Christianity, particularly for those in the Roman Catholic and the Eastern Orthodox faiths.
Seventh Day Adventists, like many Protestant religions, don’t actually use crucifixes, or wear crosses on chains, and often Seventh Day Adventist churches don’t even have a plain cross. Gilmore Girls seems to use Mrs Kim as a sort of grab-bag of extreme religious tropes and clichés, even when it doesn’t make any logical sense.