This is a documented phenomenon with abuse in particular. I’ve had a number of people ask me why they’re falling apart now after they’ve moved into a safer home, or they’re in a less dangerous area, or they’ve left an exploitative job, or they’re in a healthy relationship for the first time. Generally, it’s because they made that positive change.
When we’re still in the midst of crisis, we’re often too overloaded and physically/emotionally unsafe to really feel or process anything. So for most of us, everything gets pushed down/repressed/dissociated until later, when we’re safe and supported. The threshold of safety at which processing begins to occur varies from person to person. And the mental calculations used to determine “safety” usually happen on an unconscious level. Very few of us have the conscious thought “I’m safe now, so I can process what happened to me.” Instead, the subconscious realizes some level of safety has been achieved, and so it just dumps a load of suppressed stuff.
Sometimes, it’s contrast to past experiences that makes us realize something was traumatic at all. In such cases, it’s not that we’ve reached a level of safety and can thus begin to process, it’s that we finally have a basis for comparison to know that what went before was unacceptable.
