If there is someone who is dead in real life that is alive in your dream, then you are realizing that your connection with him or her is still very much alive. See Awake.... Strangest Dream Explanations
To dream of being eaten alive, represents a part of you or your life that you wish would leave you alone and stop creating a nuisance. It may also mean that your actions are disconnected from your emotions.
If you were eaten by an animal in your dream, also look up that animal in this Dream Dictionary for further meaning.
If you were eaten by humans, look up “Cannibals”.... My Dream Interpretation