Hi everyone

I have a very urgent question to ask since I have decided to start with the LD-training as soon as possible. But I have a problem and hope at least some of you guys can help me:

One year ago I was watching a horror movie ("The Exorcism of Emily Rose") together with a girl friend of mine and I was horrified by it. Previously I had read some information about the film wich said that it is based on true happenings which occured in the 1960s in Germany. I am not religious yet the movie scared the crap out of me because it all really happened to a girl in real life and after all this years her case remained unexplained.
Anyways, I have realised that ever since I watched it, I became paranoid and scared of the night and that fear hasn't faded away for over one year.

So here's my question:

Though LD means that one can control his dreams, could it be dangerous for me to do it? I know that one is able to control his actions and his dream but what if I see Emily Rose in the dream and though she's not real she will surely seem very vivid to me. Could it cause damage to me and my psych if I encounter her and my fear groes bigger and bigger?

I hope you understood my question because my English is pretty poor.
Thanks for your help!!