Take a 22 handgun, some ammo, and ear protection. Convince her to go to the range or a place you can shoot. If you can do this you will change her attitude and maybe get a smile out of her when she busts a tin can.
Dog her into going if she refuses and ask her why she is so afraid of something she doesnt understand.
This will never work unless it's their idea. If they show an interest, you may have a chance. Otherwise, any such conversation will just throw them into cognitive dissonance when you prove your points rationally. Their brainwashing will not allow them to accept any facts in your argument, and their responses will typically be shockingly irrational. It's a mistake to think that you can cure irrational thinking with rational discussion. You can only do this incrementally over time, unless the world force feeds them a red pill they cannot escape - and even then they are likely to resist. Been down this road many times, and the best result I've ever seen is, "we'll have to agree to disagree".
