I'm very much the same as you @Frieda I will tell ppl that I am not coping with whatever they are doing or is going on. I will ask them to stop and then they get to chose. If they do I try let it go.
This is what some of us are not receiving. My own sufferer told me that once he has a bad opinion of someone, there is no turning back, and they can't convince him otherwise (which, yes, coping skill based on being manipulated in the past). I can live with that. Unfortunately, my sufferer was one who would tell me I was doing something that bothered him, but refused to tell me what that something was (looking back, he probably didn't even know himself most of the time), so I got strikes against me without even knowing why or for what.
Then I was on the receiving end of the bad opinion, over miscommunication. Even once he acknowledged that it was miscommunication, "The damage was done," I had "too many strikes" against me, and there was no turning back. I think that might be when it becomes maladaptive. And he didn't trust me, our therapist, or anyone else, to point out that his version of reality might be through the lens of PTSD, and thus warped.
On one hand, I get it - we all have to trust ourselves, and our guts, to tell us when we're in danger. On the other, when your lizard brain sees nothing BUT danger, even from those who have no intention of hurting you (and are possibly not even aware they are), the running really does seem like something that needs to be addressed.
I don't know what the answer is. I don't expect anyone to stay in an abusive relationship, and obviously there might not be looking back from leaving one.
I do know that, for my sufferer, and from reading around here, for others as well, the person on the other end may be taken completely by surprise, because while the sufferer thought they WERE communicating, they actually weren't. Or at least not in a way the other person understood (I was bewildered a lot of time when my sufferer thought he was communicating with me - and I'm trained to listen).
Of course, the example
@blackemerald1 gave, with the dog chasing the horse? THAT is very clear.