Puritan Board Sophomore
I appreciate the delicateness of this answer -- avoiding overwhelming someone with too much "correctness" who already has overwhelming problems, but still avoiding treating prayer as some kind of gimmick.I don't want to pile on when you're obviously dealing with a difficult situation, but do you see why the "works" language with regard to prayer seems inappropriate? Prayer "works" or not according to God's sovereign will.
But I think some of the answers above reflect a lack of experience in confronting evil. Someone who moves out in faith to confront evil will find empowerment by the Holy Spirit without regard to a lot of precise methodology.
And for those who have no clue what I'm talking about, you might watch the movie The Exorcist to get a feel for the dangers of confronting demons without the indwelling Holy Spirit.