That is very interesting! I had my own experience at a hospital. I had gone in for surgery, when I was twelve. It was a fairly serious surgery and I was there for 2 or 3 weeks. Anyway, shortly after my surgery I woke up to find my bandages had fallen off my head. I called a nurse but no one responded. o I got up and walked out of my room looking for someone to help me. And then out of no where a nurse was helping me. Taking me back to my bed. I remember that she had one of those hats on... Anyway, she took me back to my bed, and said she get someone to help me. I was only 12, I didn't think "Well why don't you help me, you're a nurse..." A few minutes later another nurse came in, and I asked her who was the other nurse and she said, there was no one else but her at the moment.
It was only years later that I heard on the news that there was a reported "ghost nurse". It kinda spooks me out now, but at the time, it was so ordinary.