The Six Swans

A curse has turned Princess Ingrid's six brothers into swans. In order to break it, she must sew a shirt for each brother out of nettles, and she can't speak until her task is complete. She has worked for years and not uttered a word but now her life is in danger because of the schemes of her jealous mother-in-law. How can she defend herself without speaking? Will her husband stand up for her?