My wife is not a big fan of me investing a large amount of money toward preps, so its a hit or miss as far as preps. However, she does support me to a point, as long as I don't go overboard, so I tend to be very covert about how I go about it. For example stockpiling in front of her is totally out of the questions. The two storage site that I use are owned by friends of mine, so I am pretty off the books on most of my stored preps, other than what is in the Garage, shelters, and what is in the attic. Now mind you, she is not a big fan of seeing, the two years of toilet paper, paper products that are in two large storage boxes, she is not aware of the plastic bins that have them too, but when we run out of T.P. in the bathroom cabinets or in the garage, she is first to point out what is upstairs, which causes us both to take sides on the preps. Another way to subvert preps is to claim, like I do, expiration dates on ammo, food, medical supplies, batteries, etc...I know this might sound very dishonest, but well she also has in the past used some of my preps...example, she had a big group bbq, so I reconstituted some dehydrated foods, fruit, meat and potatoes, etc...then helped cook it all for her...no one never knew when I added my own style of doctoring it up, that the stuff was dehydrated. Also when it comes to the veggie garden and fruit trees...the kids and her enjoy it. Also, when I was playing around with tilapia...she and the kids enjoyed a good meal. I just reinforce when we have discussions about things regarding preps, she's reaped from the experience.
We've had really good discussions on dehydrated food, so a lot of this is stored at my climate controlled storage site that my friend owns and other non-consumable preps. Ammo is typically stored outside of town, in my home, and also in the shelters with an odd assortment of weapons.
Weapons are a totally different issue, she is not a gun enthusiast, despite her family being enjoying the sports from weapons. She knows I have a CHL, and is okay with it, but she is not running out and getting one. She is okay with the mace and I have a Taser in her glove compartment, but she draws the line on a loaded gun. We had a discussion on a machete that led to a blown out fight last year, so I pulled it out of the BOB and have it stored in my weapons kit. This is compromise for me.
As far as discussing preps, she contributes, she attends some training, has learned personal first aid and other prep training in the event we have a tornado here, she wants to be able to contribute and also respond to her family. She understands OPSEC, etc since she was married to me when I was in the military. She understands about not drawing attention/watching what she says. As long as I try not to convert her into a prep, she is okay with what I do. I respect my kids decisions, son is okay, to a point as long as it doesn't interrupt computer stuff, but he doesn't mind going out and firing weapons. I disguise paint ball outings by teaching them basic tactics and fundamentals, I simply don't say anything about SHTF or bring up about prepping, to avoid a fight.
So for me, its all about delivery. I know when to pick and choose the battlefield, and when she's not in a good mood, I stay away from the subject. I know this might not help you in your particular case, but it has helped me avoid the pitfalls of early demise.