Dreams often serve as a reflection of our subconscious thoughts, emotions, and experiences. In your dream, several elements stand out, particularly the rural setting, the presence of two moons, the encounter with the man, and the visit to your partner's family's house.

1. Walking Alone on a Dark Road: This could symbolize feelings of loneliness or uncertainty in your waking life. The darkness might represent unresolved feelings or fears, possibly linked to your partner's passing.
2. Two Moons: The two moons can signify duality or a conflict of emotions. Moons are often associated with intuition and the subconscious. This may suggest that you are grappling with different aspects of your feelings about your partner and your current situation.
3. The Man on the Road: The man's initial unfriendly demeanor and his warning against taking a shortcut could indicate a sense of caution in your life. It may reflect your inner voice cautioning you against rushing into decisions or paths that might not be safe emotionally or physically.
4. The House and Your Partner's Family: The house represents a place of comfort and connection. However, feeling unwelcome suggests that you may be struggling with your role in your partner's family's life after his passing. The preparation for decorating and updating the house might symbolize the ongoing changes in your life since your partner's death, as well as the need for healing and moving forward.

Overall, this dream may be encouraging you to acknowledge and process your grief while also recognizing your desire for connection and support from your partner's family. Consider reflecting on how you can maintain those connections and honor your partner's memory while also taking care of your own emotional needs.