Agreeing. If they can fit through, they will. Generally intended to. Takes them a bit since they have to essentially suck in their gut to do it, but. Now you know. Probably time to put some stripping on the base of that door and take it as a lesson learned at a better time than her say, escaping in a closed room and doing that without you knowing she could. Worst she probably got was some scraped scales, so give her a look over to be safe, but most likely fine.