My advice would be to go to your minister ONLY if they are open to this sort of encounter. If not, then I personally wouldn't "go there" with them. It may open up issues you're really not willing to deal with.
Here's my take otherwise -- please note up front that I am a Pagan, not a Christian -- however, I will try to make some suggestions which *should* help and are in line with your personal religious beliefs.
What I might would do is pick out a favorite prayer, maybe the Lord's Prayer. I would maybe pray over some water, asking God to fill it up with his light/love/presence. I would add some salt to that. Know that salt is a powerful substance on many levels. I would then take a candle, truly SEEING that as the Light of your Lord, and I would go room to room. I would wash every doorway with the water -- knowing in your heart as you do that your Lord is cleansing away any evil, sadness, regret, hatred, pain, hurt etc. left in this home. I would take a moment and say your favorite prayer. And then I'd go to the next room. Any left over water just poor out afterwards, and maybe leave the candle burning in your living room, put on some favorite hymns or Christian music to listen to, and try to have a really good happy family time in your home! See your family, your love and faith of your God filling the home up, and pushing everything else OUT of the house.
Hope that you might feel comfortable with that. It should help.
Sending your Light, Love and Happiness!
~ Becca