Michelle, it's interesting that you've brought up this dream about your co-worker. Given the emotions level is low and despite the presence of negative feelings, the dream may reflect a mix of your fears and respect concerning changes in your professional environment. The idea of your co-worker leaving could symbolize an end to a certain dynamic or stability you're accustomed to. It's possible that this person represents qualities you admire or rely on, and her departure in the dream might suggest an internal call to adapt or develop similar strengths within yourself.
Connecting this to your previous dreams, there's a theme of transition and dealing with unexpected changes, whether it's in personal relationships—like the wedding with your ex—or professional spheres, as with the dream about teaching at a different school. These scenarios may echo feelings of uncertainty or readiness for change in various aspects of your life.
Looking at the life events you've shared, such as job loss and breakups, it's clear that you've navigated through significant shifts. These events can leave a lasting impact and sometimes resurface as themes in dreams when you're processing new challenges or changes, much like the anticipated departure of your valued co-worker.
It seems your subconscious is actively engaging with notions of change, loss, and adaptation. While your co-worker's announcement in the dream was not a nightmare and carried a low intensity of emotion, it could be a reflection of your contemplation about the future and the evolution of your current work environment. It's normal to feel a sense of apprehension when faced with the potential loss of a familiar and comforting presence.
Remember, Michelle, your dreams are a safe space for you to explore and emotionally prepare for the many shifts life may bring. They can be a source of insight into your feelings about change and personal growth.