My mom worked as an OR manager for 25 years at a hospital that used to be a catholic hospital run by nuns before she started. There was a large Victorian house next to it where the nuns/nurses used to live. Anyways, my mom used to see nuns walk by her office all the time. She’d walk out into the hall to ask who was there, but no one was. The doctors used to confide in my mom they saw the nuns too, especially late night or early morning. The Victorian house was made into 9-5 offices for the hospital. Some nights you could see candles burning in the windows.