Yea, a pretty messed up nightmare for sure,
but things that are really bad are meant to alert one to something very urgent.
we can look at the different symbols and try to make some sense.
Dog: male aspect of self.
Kill/murder: destroying an aspect of the self, killing off beliefs and energies associated with victim.
Anger: disappointment of the self. Frustrated or hurt. unexpressed and repressed emotions. Needs not being met. inability to acknowledge problems within.
Animals in general: represent the instinctive part of self.
Rape: allowing someone else's influence to drain your energy.
Kiss of betrayal: (this one is hard because a kiss is generally thought of a being a warming and comforting, so I'm guessing betraying some kind of comfort within you.
In short I would guess she is repressing an aspect of the self one wishs to get out in the open.
hope that helped a bit,