Zelda is one of the main protagonists of the Movie, while she is the Princess of Hyrule her birthright was stolen from her when the castle was attacked. She has spent the 18 years of her life on the run and training under the ever watchful eye of Lucario. She is unsure of her own powers and is rather trusting.....too trusting in fact. She doubts her own abilities when it comes to fixing the problems of the land but is very confident in her ability to fight. I don't really have anything special in mind for how her voice should down as long as you don't sound too young or too old, try to fit that 18-21 year old tone