Charlotte is absolutely chaotic. She has a devil may care attitude, and is way more reckless than Mindy or Andrew. She will do things for the hell of it. In this episode, Andrew gets possessed by a spirit for the first time, and the gang is not so sure what to do. For her voice, I think anything but a high pitch could work. I don't imagine her to have a super high pitched voice, but other than that, I'm flexible!