Wow I didn't know triggers could be subconscious too. I like things logical but trauma and emotions are not. Ptsd is so unpredictable some times. Somethings I know will likely trigger me and cause symptoms to get worse but other times I'm just blindsided. I hear you on "Emotionally vomit". I usually ignore feelings and let them back up on me until I don't cope in very healthy ways. Therapy is helping with that though. I've had a similar talk with my T about holding back emotions. He used an analogy about a cup filling up then constantly overflowing since it's never emptied emotions are not acknowledged or expressed.

I wanted to say this earlier but I ran out of time on my lunch break I think its awesome your sister built you the bolt for your door. That's pretty cool that she was understanding and supportive.