learning123.
I've almost posted this a few times and I've always held back for some reason -but, bugger it, I will post it.
You've already mentioned this ex is a woman and so are you so (*coughs*) - I used this example to explain it to another one of my gay friends. We were out and I got an sms from an old friend - 'hey, we're going clubbing on the weekend - you coming?'. And I didn't answer the sms and was like 'argh, I don't wanna go and I don't wanna reveal why yet either'. And she asked me why I didn't wanna go and why I didn't wanna just tell him what was going on, re : ptsd. Why I was withdrawing from friends, relationships, etc. I explained it like this to her and the penny dropped and she got it. So I hope it works with you to try to help explain some of this behaviour you're dealing with.
I kinda hesitate to use the word 'broken', because I actually don't see myself as broken (again, just me, we're all different). I would probably prefer to use the words 'in a period of realisation and transformation'. Basically, I said to her 'when you figured out you were gay did you kinda withdraw from old friends?' ...'yup'... 'why?'... and she went 'ahhhh, I get it now'
I said that because for me this feels very much - in terms of how I'm feeling - like when I realised I was gay. And a lot of the same behaviours came out. It was like being hit by a truck with the license plate 'duh'. And I was 16 and I sorta sat there and I thought 'how could I not have known this about myself? How is it possible to have been on this earth for 16 years and not have the faintest clue about something like that about myself. And I felt like, I suddenly had to pretend a lot. And I withdrew from my old friends out of a sudden feeling of 'but they don't know me anymore. The Jen they know is gone. I'm a new Jen. I didn't plan this, I didn't know this, I wasn't faking or lying all that time - I simply genuinely did not know this about myself and now I do. And they don't'. And I didn't know how to tell all these people that had known me for years one way, that I was in fact now an entirely different way.
You've mentioned that she acts one way around you and that you seem to cop the true side, when she's 'pretending' or not showing it to others. She is probably going through a lot of those similar feelings with realising she has PTSD. It's a good thing to realise if you ask me, because until it does sink in - you are living in denial. And you don't really have a chance of authentic happiness. As hard as it is to realise you have PTSD, I think once you come to terms with it and begin to manage it - then you have a genuine chance of happiness as the person you now truly are. But, just like when I figured out I was gay - there was a feeling of mourning involved. And a feeling of 'ok, this one small thing about me is actually going to affect the way the rest of my life unfolds from this moment forth, so I'm going to have to come to terms with the 'death' and the 'mourning' of that old life/me and how I just figured it would be'.
Over time you will probably find that she will hopefully learn to become a little more herself in front of others too. But if she is still dealing with/processing/learning this then she probably is in a slight state of mourning in terms of 'things aren't ever gonna be the same again, are they?'. She's been hit by the 'duh' truck and has prob been in denial a long time. You know her very well. She's very close to you. She probably feels comfortable letting a lot of the rage and the 'venting' seep out in front of you. Rest assured, in her mind, this realisation will be huge. Hopefully, that explanation will give you an idea of how huge it probably seems in her mind.
Gosh, hope that helps and I'm sorry you're having to be part of this journey of her's. She must honestly love you very much on whatever level to let you see some of it!!
-Jen