Dreams involving ex-partners and family events can often reflect your current feelings and unresolved issues. In this dream, your daughter's father bringing a cake may symbolize a desire for celebration or reconciliation, especially regarding your daughter's happiness. The presence of his niece and the unexpected woman could represent feelings of intrusion or unexpected changes in your life.

The rude behavior of the woman may indicate feelings of being disregarded or unappreciated in your waking life, possibly in relation to your past relationship or current dynamics with your daughter's father. This could suggest that you are processing feelings of jealousy, insecurity, or discomfort with how your family situation is evolving.

Consider reflecting on your feelings toward your daughter's father and any lingering emotions about your past relationship. It might be helpful to think about boundaries and how you want to navigate your interactions with him in the future. This dream could be prompting you to assert your feelings and ensure that you feel respected within your family dynamics.