The helpless/silent sufferer/bearer/victim role doesn't resonate with me. Material bringing up such protagonists never appealed to me. This is why The Swan Princess was a source of disdain and only gained recognition in my view with The Black Swan movie starring Natalie Portman.
All that to say that this story might not have been my cup of tea if it wasn't for the few reasons behind the silence of the princess and the whimsical parts of the tale.
The Six Swans by the Grimm Brothers has a princess running around graveyards, collecting nettles and looking out for her swan brothers while falling in love and whatnot. Awesome!