Kenneth,
As Ned already said, nearly all of us experience this part of the Beast. You will never convince your friends, family, etc., of anything so IMHO you have to stop trying to convince them. They have to learn what is going on with you. More important, they have to WANT to learn what is going on with you. The good news is that if she has put up with you this far, there is a chance that she wants to learn.
Now you have to figure out how to teach her. But first you have to teach yourself. Getting here is a great first step! Welcome to the fold. This is some brutally hard shit we are going through. All of us are at the minimum reasonably intelligent people, used to seeing a problem, seeing what we have to work with, and then getting shit done. The problem is that it is your own mind and nervous system working for/against you. When you were in whatever shit you were in, you learned how to survive. When it is your actual life being threatened, those survival techniques get logged into your brain. Not only are they logged in, they are chiseled in stone. So now you have to erase that log with your two fleshy hands...and while hands can eventually wear the stone down, it takes a while and it takes hard work.
The great thing about this forum is that you can vent, bitch, gripe, and complain mostly without consequence. And for me that has been a critical thing. When I was keeping it all in... Well, lets just say it was messy. Just don't get personal with 'Yo' mama wears combat boots' and everyone here will have your back. They will have your back even if you make some mamma jokes, just be prepared to have another vet with the Beast come back at ya! ;-)
So read on brother. Read, vent, and learn. Take care of yourself and welcome.