Of course I will pray for your sweet little niece. I hope you don't mind me sharing some hopefully comforting advice: I went through the same thing until I was an adolescent and it can be terrifying. Please let her parents know that no one or thing has power greater than our Almighty GOD. Literally OUT LOUD tell these spirits to GO in the name of almighty JESUS. It works. Also no scary stuff on tv. It also would help to have the house blessed by their Priest. *Dear God, please protect your child from these entities/ images. You are King of Kings, instill that faith and confidence unto your children. Let your lightness shine like a torch throughout their home and drive out all darkness. In your son Jesus name I pray, amen. Be blessed