Bill and Bunny(1986)

Bill is on cloud nine. He has just become a big brother to the lovley Bolla. At first she seems like any other toddler, curious, jovial and sweet. But as the months turn into years and Bolla continues to live in a world of her own, it becomes clear that she is not quite like other children. Based on the book by Gunilla Bergström, creator and author of the Alfons Åberg (Alfie Atkins) books.