Hello Wander, I know for we who suffered our trauma as a child, trying to figure out when to tell someone relevant is very difficult. In my case it was sort of, but my own mother was not as much a care giver to me when I grew up, as the person who did her best to keep us in an apartment or home, clothed, fed and in school. None of which nurtured me to where I thrived. I am a failure of neglect, and that's been a deep pain for me. My mother was also raped by some in her core family and I was told decades ago. It hurt me that my mother had that chance to tell me, while I kept my secrets to myself.
That's the thing to me, mom, and my long gone dad from divorce (seen maybe 2 times a year at best), neglected to give a shit about me and my suffering about whether "I matter" has been part of the crux of my deepest pain. Which is why I eventually told them both. I waited to tell my dad, I waited an extra year, but I had to tell him for me, I would have done the writing thing if he had passed. I'm understanding and sensitive to what we go through, I get these things, maybe too deeply, and I am trying to convey a sense of our need vs what we perceive as a perception of our parent/s. They've been an adult the whole time, and we weren't. It's not fair, and that they've got issues is understood, my mom suffers deeply with depression too, but it's her job to manage it, not mine.
The man who started this thread has his own anxiety about trying to tell his wife. He's an adult survivor, and I can imagine the intense thinking that goes on with being an adult survivor of trauma. The ptsd that does evolve and what trying to maintain composure with one's spouse while processing that ptsd with therapy will be like. Like us, but very different. It's that we all have our narratives of what where our source is, and trying to make connections, see through each others eyes, it's not easy, but we manage it.
I'm hoping you'll keep writing, and I need to do some of that too.
Best wishes Wander.