Possessed?! Options

I recently discovered that someone close to me has and is bothered by 'shadow creatures'. The personin question has a history of abouse and self mutalation. I spoke to a Santeriamo Preist and said that my discription would mean what he call Ibolem are causeing the problem. He gave me some Cafka (sp) to watch the persons reactions around it to see if they wee possesed. The reaction was dis jumbled thoughts and behaving in a dazed obscene kind of behavior. I believe this to be a sign of something but how exactly whould be the best way to go about this.

Any advice at ALL!!!!!!!!

Ok, this really isn't my field, but, I do have something you may want to try. I'm putting a disclaimer on this because it is not from my personal realm of knowledge.

Bind there chest with a ribbon. I think it needs to be soft, maybe silk. I see the ribbon as red or blue but I am not sure if the colors matter. Give them salted charcoal water all in equal parts. This should make them vomit if they are possessed. This should drive the dark spirit from their body for a bit. This should give you enough time to help your friend.

I'm not sure if that will work. It's from an allied spirit. If there is anything I can do, please let me know.