Some context before I (32m) get into the situation as I feel it's important to how I reacted. I have been in two situations, one as a 6-year-old and at 28, that involved women and unwanted touching and beyond in both occasions I have been powerless as a child or incapacitated as an adult like unable to control my bowels or bladder kind of incapacitated. Both my wife and my guest are aware of my past. I'm trying to keep this broad stroke so as not to violate any rules, but again I think this context is important.
So on to the current situation. We currently have a (26f) friend who is living out of a tent, and we often invite her over so she can do laundry, shower, and other hygiene tasks. In this instance, I decided to hop onto my computer and play some games while she did her stuff and hung out with the wife while I chatted back and forth with them a bit. As she wrapped up her visit, she approached me from behind and hit me with a hairbrush not hard just to get my attention. It for sure startled me, and I did snap at her telling her to stop. I looked up at her from my chair, and she does it again, and I tell her to stop again while making direct eye contact with her, which she doesn't doing it once more and then demanding I hug her, which I refuse to do, telling her very clearly "fuck no, I don't want to touch you," and I follow that up with if you keep going like this I'm going to kick you out. She gives me a kinda laugh and says whatever, I'm leaving anyway and then touches me again.
I get to my feet now both extremely panicky feeling and angry we have a bit of a scuffle not a fight, and I end up shouting at her to leave and not come back. I felt entirely violated in my own home during all this, but both her and my wife insist it was just a game and she did not mean it despite me telling her no repeatedly and both my wife and the guest hearing it. I'm for sure not saying my behavior was great, and I've been seeking long-term treatment to help with my issues both mainly being PTSD related to my time as an Army MP and the events mentioned in my personal life. Despite that, I 100% should not have acted in anger like I did.
So am I wrong for feeling the way I do? Or is the wife and the guest right and it was just a game and she didn't mean it.
EDIT: to be 100% upfront it escalated and I reacted (badly) physicality was involved but as also pointed out I was near panicked and overwhelmed due to my past.
EDIT 2: EDIT: Gonna try and respond to a few more posts then I've gotta have a break. I do thank everyone that took the time to write out comments or interact with me.
Edit 3?: My husband gave me access to this account, and I told him I wrote down my perspective. When I asked if I should add it, he said "it's up to you." So here it is.
Our friend approached my husband, who was playing an online cooperative action game on his computer, at his desk. I was sitting on the couch about 8 feet behind them, waiting for my friend to be ready for me to drive her home. She was wearing a long night shirt with a loose v-neck. She stood at his left side peripheral for about 2 seconds before she tapped the back of her hairbrush firmly against the side of his left shoulder. I immediately was not comfortable with this, as I don't tend to engage in horseplay unless someone else has repeatedly demonstrated to me that it's a method of expression that they like and want. I do enjoy my husband's frequent physicality with me, including picking me up or tickling me. My friend and husband have engaged in horseplay on many occasions before, tickling, poking at one another's stomach, and playfully throwing soft objects. This often included my friend's fiance, who usually only reciprocated with my friend. I will frequently smack my husband on the butt, but only when I am sure he is in a mood to be okay with it.
My husband said, "Hey, I'm busy," and didn't turn to her at first. She hit him again with the brush in the same spot, and my husband said "stop" in a normal voice, and my friend responded, saying "give me a hug (which we almost always all do at the end of visits). I don't remember if she hit him again, because he said (and I'm going to paraphrase, because at this point I began to get alarmed, and was only listening to the tone of his voice, and less to his words, unfortunately) that if she didn't stop, he'd make her leave. She said lightly that it didn't matter anyway; she was leaving. At this point, I realized by her teasing tone that she didn't understand how upset he was getting, which I did understand, through years of experience with his tone of voice and what it means. He didn't raise his voice, and I could hear that he was attempting to remain casual as he said something else, ending with "my dude" but that she had really pushed him past the point of anger and I didn't think she realized it. She put her hand on his shoulder, and he said "I don't want to fucking touch you now" and he stood up, and grabbed her by the neck of her shirt, pulling her foreward, and then put both hands around her throat, and I saw his hands tense, as he leaned down into her face and told her to leave the house and never come back. He pushed her backwards and she started to cry, and put her head down, hurrying to get pick up her things. My husband sat back down at his desk and didn't say anything else until I told him I was going to take the friend home and I'd be back, and he said "sure." The friend cried during the ride home, and her voice was harsh, but I wasn't sure if it was stress or physical. She did have marks on her throat, but those faded over the next few hours. She asked me repeatedly why he got so upset, and if anything was different, and I did point out to her that he said "stop," and she said that she thought it was part of the play. When I returned home, my husband did not seem upset, and seemed more relaxed than before, although he seemed nervous about my response to the situation. He said that he didn't remember putting his hands around her throat when I told him that he did.
My thoughts about this are that: 1) horseplaying with people with trauma, which all three of us have, to various degrees and in various forms, is potentially dangerous, and I'm frequently uncomfortable when it happens, although I often don't say anything, as I'm usually the odd one out when it comes to initiating social teasing, although I often enjoy receiving it.
2.) Our friend should have stopped at the word stop. I don't know why she didn't, but I don't think it was out of malice, because she genuinely did not seem to see how she was provoking him.
3.) Her actions were inappropriate, in my opinion, but his were potentially life-threatening and the fact that he didn't remember what he did was alarming. I am concerned that this will happen again, and he will have charges pressed in a situation where he is the first physical aggressor. This would be even worse if he inadvertently harms someone, and the escalation of force combined with memory issues in this latest case makes me worry that it might happen.
4.) I possibly could have prevented this from happening by being quicker stopping her or by getting between them, but I know from experience that once he has a grip on someone, I'm not strong enough to break it, and he ignores my presence or physically shakes me off if I try. He ignores my words entirely at these times. I expected her to see that he was upset before he snapped, because it seemed obvious to me, but she didn't, and I have no idea why. She's had lots of trauma of her own (as have I, including SA) in the past (and, like me, has worked in jobs that revolve around dealing with people dealing with trauma).