Dreaming about someone who has slandered you can reflect your subconscious processing of the situation and your feelings about it. Here are a few interpretations:

1. Processing Emotions: This dream may indicate that you are still processing the hurt and betrayal you felt from that person's actions. It’s normal for unresolved feelings to manifest in your dreams.
2. Desire for Resolution: Your dream could signify a desire to confront the situation or seek closure. It might be your mind's way of urging you to address the issue in your waking life.
3. Self-Reflection: This dream may also lead you to reflect on your own self-image and how you perceive others' opinions of you. It could be a reminder to focus on your self-worth rather than the judgments of others.
4. Fear of Judgment: If you feel anxious about being judged or misrepresented, this dream might be a manifestation of that fear, indicating a need to build your confidence and establish boundaries.

To move forward, consider ways to address your feelings about this person and the situation. Engaging in open communication or seeking support from trusted friends may help you process these emotions further.