Focus on potential should be replaced with genuine connection and mindful attention. It helps us to be with our partners as they are now without waiting for them to manifest something else instead. It sounds like she realized it wasn’t a good match for her, and even without a “reason” did what she needed to do to make way for the right relationship. While it’s never comfortable, it also allows you to find the right connection. I wrote a little about this in “Leaving You for Me”.