For the matter, they often don't "think" to access memory, even when they've been away - Mostly because the intent of sending them away is usually to have time alone. Even if they pry a little, either accidentally or instinctively, they usually get a vague context rather than the full experience. I've noticed an instance, for example, where they had in the past already instinctively called up a jist of what I did during a writing exercise - but even later, when I actually went over the detail of that exercise with them, they were surprised by what they didn't know from it. (edited)