Well, looks like Dottie is smarter than I thought. She figured out how to wedge her head between the litter dam and the door and pull her head back to slide the door open enough to fit her body in and push the door open enough to escape. Being sick, I slept in and when I woke up to check on everyone, I saw Dotties door slid open a little bit and she was gone. I checked around and saw her rump hanging out from under the TV stand. I moved it and grabbed her and she just looked at me. I put her back and she drank some water and I saw trying to do the head wedge trick again. So I ended up using the lock on her cage. She gave up after a while and went back into her hide lol. Here I thought Dottie was kind of derpy and turns out she is probably the smartest of the snakes lol.