I don't think you need to say it out loud to get better. You have written it down, you know in your own head what happened, and I think that is enough. I had a similar thing, and I still don't like saying it out loud, if I do talk about it I get nightmares again and feel more panicky, but I feel as though the help I had for my PTSD did work, in that it doesn't have much impact on my life now.
There is the attitude now that you have to get everything out in the open and talk about it for things to improve, and I can see that talking can sometimes diminish things and take away the huge weight they can have, put them into the past where they belong. But equally there is a lot to be said for just getting on with living, you will never be the person to whom nothing bad happened, and at some point you have to put a lid on that a bit to survive. Many men came back from WW2 and never spoke to their families about what they had been through, but still lived happy lives, had children, were loved.
When I was treated for my PTSD there was something I couldn't say out loud, I was asked to write it down, and I did, but actually that wasn't what helped particularly. Having someone be kind and tell me that I would feel better with time was the thing that helped, not her reading this small bit of information, which on paper (literally!) wasn't the worst thing that had happened, but was the thing that preyed on my mind the most.
Sometimes it just takes time for things to get into their proper place and really feel like part of the past, you grow older and change, and it just becomes less and less part of your daily thoughts. I have a bad nightmare maybe once or twice a year now, and the triggers are predictable. Some things will always frighten me, and I am more of an anxious person than I think I would have been, but other than that it isn't an issue.
I had Cognitive Behavioral Therapy, it is very practical and not focused on raking up the past at all, just dealing with how you feel now, have you been offered this? I was treated at the PTSD clinic in Charlotte St, London. If it is still there (I was treated about 15 years ago) then ask to be referred by your GP, or call the clinic and ask them.
Things can get better, really, you don't have to be defined by this for ever.