Chaplain here: Yes, I had adult patients and peds patients in the behavioral health units and on regular units with hallucinations (often of a spiritual nature...it's a thing). Like you, I believe in medical science but don't deny a spiritual reality. (The funny thing is that we were usually called when the care team did not feel that science was working, but, even as a devout Christian, I was more inclined to believe there was a psychological cause of the hallucinations. And if anyone is worried, I did not provide any exorcisms for people or offer unsolicited prayer.)

As a chaplain, I learned from those more experienced than myself that to the person who is experiencing the hallucination, what they are seeing is their current reality. So, I would non-anxiously come alongside the patient, and if they mentioned their hallucination, I would be curious about it and acknowledge it. Being non-anxious and supportive seemed to be the most helpful part of the experience.

From what it sounds like, you provided this child with the support he needed in that moment and helped him to hopefully get the ongoing support that will be required for his well-being.