I dreamt my colleague was leaving work. She disappeared into fuzziness. It had a sense finality around it.
Dreams can often have multiple interpretations depending on the personal context of the dreamer. However, based on the content you've described, this dream may represent your subconscious thoughts or feelings about your colleague leaving work or possibly leaving your life in some way.
The disappearance into fuzziness could symbolize uncertainty or ambiguity about the future without your colleague's presence. The sense of finality suggests that their departure may bring about an end to a certain chapter or dynamic within the work environment or your personal relationship with them.
It's important to consider your own emotions and experiences surrounding this colleague in order to fully understand the meaning of this dream. If there are unresolved issues or concerns related to this person, your subconscious mind may be processing and reflecting those thoughts through the dream.