Hello,
If I was there I would bless your house and pray a Rosary with you and a prayer of exorcism of any possible evil spirits harassing you and playing on your fears. Either way it does not hurt as you say. Yet, as it was said, we must give too much credit to the Devil and fear him anywhere near as much as we should fear offending the Lord and not trusting Him, loving Him the way He deserves. Ask a Priest to bless your house, the bedrooms, the yard, the whole bit. It’s not magic, just a normal Catholic thing to do, that I do normally. Then I suggest you pray with the child who said he was spooked by a spirit and read a story about his guardian angel, the life of a saint, Bible story for children, regularly. Again, just normal things we should be doing anyway. God bless you.
I will pray for you and pray a general exorcism prayer of protection for your home and family. Remember that you do so also as you pray the Our Father, deliver us from evil, really from the evil one.
Fr. Dominic