I would report it to the supervisor thusly:
"Hi, I'm having an issue with one of my coworkers here. I'm not sure if she is mentally stable, and I'm getting a bit concerned. She seems to be telling people that I'm a devil worshipper because I keep a couple of pet snakes, and it's beginning to make me feel a bit uncomfortable. I'm worried that she may not have a very solid grasp of reality, and might wind up saying something frightening to a patient, or even become dangerous."
![]()