Dreams involving the loss of a loved one, especially a parent, can be deeply emotional and often reflect your own feelings and experiences. In this case, the dream may symbolize feelings of grief, loneliness, or a sense of responsibility for your family's emotional state.

Your sadness in the dream, contrasted with your family's lack of visible emotion, might suggest that you are processing your grief differently than they are, or it could indicate a feeling of isolation in your experience. This dream could also be a manifestation of anxiety about losing loved ones or concerns about how to cope with such a loss in reality.

Consider reflecting on your feelings towards your father and how his passing has affected you. This dream may be prompting you to acknowledge and express your emotions, even if others around you seem unaffected. It might be helpful to talk about these feelings with someone you trust or to find a healthy outlet for your emotions, such as journaling or creative expression.