From my limited understanding, when a trip is used in a therapy session, it allows a patient to observe past trauma from an (emotional) distance, allowing them

From my limited understanding, when a trip is used in a therapy session, it allows a patient to observe past trauma from an (emotional) distance, allowing them to process it. I can see how that would work. If trauma is so severe that you can’t even think of it, you’d push it away to the back of your mind where it would fester.