GF and I are still pretty young (I'm 21, she's 20). She was never against firearms, but she never really saw the need either. Uneducated, would be the best way to describe it. Her dad owns one gun and she's seen it before, but never shot it or done any hunting.
She doesn't shoot very often, though she is expressing more and more interest in here.
When I turned 21 and began buying more handguns and got my CPL, she just shrugged it off as "boys will be boys." She didn't have anything against it, but she didn't pay much attention either.
Recently, while at Thanksgiving with my relatives I don't see often, she hopped right in a debate with my super liberal cousin, and had some really good arguments to back herself up with. She is NOT the argumentative type, and that was certainly out of the box for her. I didn't even have to raise a finger, she handled herself like a pro. I was so proud.
She knows guns are here to stay with me and she sees how f'd up the world is these days. She wants to obtain her CPL, but mentioned that she wouldn't be comfortable carrying yet because she can't find a gun she likes. We're still shopping and shooting, trying to get her skills up to par.
Either way, she definitely 'gets it,' and she helps to look out for us while we're in public. She stays to the left and about a half step behind me, and points people out she doesn't like the look of. Been working well so far.