Something about a ghost in a black fence with a knife
It's possible her dream is a sort of vision and there are ghosts in the house. It's also possible that her subconscious is sending her a message. The subconscious does not sit us down and say, "OK", this is what I want you to consider. But rather it takes us through dreams filled with symbols, which it shows to us as a scene or scenario, if you will.
Maybe try taking some of the details in the dream and go to a site that interprets these things. I use dreammoods.com, but there are others as well. It's hard enough for us to grasp our weird dreams, much less someone who already has thought processing issues.
According to dream moods:
To see a ghost in your dream represents something that is no longer obtainable or within reach. It indicates that you are feeling disconnected from life and society. Try to figure out what the ghost wants or what it is looking for. The dream may also be a calling for you to move on and abandon your outdated modes of thinking and behavior. Dreaming that you are being stalked or haunted by a ghost indicates that you are refusing to confront issues from your past which is affecting your present life.
To see a witch in your dream represents evil and destruction. It may point to your negative ideas of anything feminine and your experiences with dangerous or heartless women.Alternatively, a witch may be a symbol of goodness, power and enchantment depending on your feeling toward your dream witch.
To see someone holding a knife in your dream suggests that you lack control or power in a situation or relationship. Alternatively, the person holding a knife in your dream may be symbolic of a dominant male figure in your waking life.
To see a fence in your dream signifies an obstacle or barrier that may be standing on your path. You may feel confined and restricted in expressing yourself. Are you feeling fenced in some situation or confined in some relationship? Alternatively, the fence symbolizes your need for privacy. You are trying to shut off the rest of the world. If there is a hole in the fence, then the hole is encouragement that you can overcome and conquer whatever obstacles may be in your way. It may also mean that your privacy is being compromised.
To see a key in your dream symbolizes opportunities, access, control, secrets, freedom, knowledge or responsibilities. You may be locking away your own inner feelings and emotions. Or you are unlocking the answer to some problem. To see a ring of keys represents status, authority, and power. It also highlights your adaptability to a situation. In particular, if you see a skeleton key, then it refers to old emotions or memories that you have stored or locked away. If the key is gold, then it suggests that influence, power and wealth will give you access to almost anything you want.
To dream that you are in a cemetery indicates an end to a habit or behavior. You are experiencing a rebirth. More directly, the dream may symbolize sadness, unresolved grief or your fears about death.
Black symbolizes the unknown, the unconscious, danger, mystery, darkness, death, mourning, rejection, hate or malice.The color invites you to delve deeper in your unconscious in order to gain a better understanding of yourself. It also signifies a lack of love and lack of support.More positively, black represents potential and possibilities. It is like a clean or blank slate.
If the feeling in the dream is one of joy, then blackness could imply hidden spirituality and divine qualities.
If you go to the site map, there are different scenarios other than just the things you can search individually. I hope this is helpful in some manner.
I have only had 3 dreams that were actual visions. The first I knew right away that it was, but the other two were 20 years apart and it was only the second one that made the first make sense to me.