I am looking for a film shown in the U.S. during the 1970's.  It was a Cinderella story with an owl that would bring 3 nuts to her that she would open to reveal gifts.  In this movie she met the prince once while washing clothes at a stream, then again while out hunting, and then again at the ball.  At the ball the prince asked who she was and she gave him a riddle to solve regarding the three different people she was when she met him each time. I would like to know the title of this film and if it is available to purchase.  Thank you, Judi 