Alright.

[He steps in closer to her, eyes locked on her own, his expression utterly, gravely serious.]

Listen to me. You will be standing in the smaller, disconnected circle. No matter what you see or hear, stay in that circle. Do not let a finger out of the range, do not smudge the lines. Spirits are called demons because they are wicked creatures and they will hurt you if they can. Do not give it the opportunity.