warm bath and a damp rag..give her a soak in a bath for 20 mins and then let her glide through the rag with a slight grip it should come off fine. I have never used a screen lid but I would think that's your issue with humidity..also bark is my choice of substrate as it holds moisture better but a hide full of sphagnum is always an idea when in blue with newspaper substrate. Can you take a pic of setup and snake separately and post them and I'm certain people on here will help sort you out if we can