I hadn't thought of it that way, but I should have. I think you might very well be right. I wouldn't put it past my xW for her ulterior motive in changing ships after all these other years is to keep following the OM. Her deep-seated insecurities, despite all pretenses to the contrary, always do seem to come to the fore. And so she probably realizes she can't really trust that fat, slimy snake-in-the grass, at least on a subconscious level if nothing else.