That's not true at all but since she's small the areas she'll be able to climb to are limited. I had a KSB escape because he climbed up and pushed the (weighted) lid off a temporary tank. I spent hours just combing every part of the room and then when I was about to give up went into the kitchen to get a drink, happened to look down and there he was hiding under a grocery bag, staring up at me. Check every inch of the room that she was in and then move out of that room and look anywhere warm. When you've exhausted searching tcutting's idea might work with creating a mini sandbox maybe put some sort of heat source there so that it will be warm. What substrate do you use? Use that instead of sand so that it seems familiar to her. DO NOT USE A GLUE TRAP. You can put flour down so you can see a trail of where the snake has been.