what kind of substrate are you using? is she due for a shed? check your floor temps with a temp gun. I use news print and occasionaly when i run out of blank news print i'll use regular news paper or ads. sometimes the ink isnt dry or it gets moist from the humidity and the ink bleeds through onto my snakes. also they get pink bellies when they are about to shed but dont normaly just disappear after a few minutes. and checking your floor temps will ensure that it wasnt a start of a burn from a faulty uth or rheostat. hope that helps get you started in the right direction. good luck and happy herping.