Dom1104 hit it on the head. Your marriage is #1. I have couple come to see me who let trivial stuff cause major relationship problems (seriously? Which way the toilet paper is hung? Squeezing toothpaste from the middle?). Don't put a CCW between you two.
My wife is still anti-gun, anti-CCW, anti-minitary channel, etc. What I did is gently broach the subject over a few years' time. As major events evolved - Virginia Tech, etc - I gently commented to the effect of "what if a CCW had been present." For me, the straw that won her over was the Colorado church shootings in 2008. As I'm a pastor, the awareness that that can happen in a church finally clicked home for her. Reluctantly, she gave her blessing.
I carry most places, now, with her not asking and me not telling. She busted me right before Christmas - we were at church practicing the children's Christmas Eve service and we, as a family, we going out shopping afterward. I had my officer 1911 in a IWB rig. She slipped up to my weak side to hug me, slipped her arm around me and "dinged" her knuckles on the heavy frame. Her eyes got
big and she said, "You're not!" I nodded and, fortunately, she dropped the conversation until we were in the car. She trhought it ridiculous I carried in the church because nothing probably would happen in our town. My answer was, "You're right - nothing will PROBABLY happen, but that's what they said in Colorado." She stopped arguing.
We're at "don't ask, don't tell." I know she doesn't like it, so I don't broadcast it. I hope & pray I never, ever am in a position to say, "See - I told you so."
You're at a good spot, really - she lets you own firearms and carry them in your car. You're one or two steps from the holy grail, so keep being gentle in your dialogue, listen to her concerns, and answer then reasonably and without sensationalism.
Q