I keep my mice and my snakes about 4 ft from one another. I have 4 ball pythons and approximately 50 mice at the moment. I have never been stuck by my bps....but I do have a very strict procedure for the way I handle. I always wash my hands and disinfect with antibacterial hand cleaner before and after handling both my mice and my snakes. The only time that I have even been struck at by any of my bps is during feeding time. This is completely understandable....because I use my mouse smelling hands to set the mice in the bps enclosure. What kinda procedure do you use to make sure the mouse smell is off of your hands?

Other than that input....Seperate the two snakes and schedule a vet appointment.