Final answer:
In 'Frau Holle', there isn't a donor in the traditional sense, but Frau Holle acts as one by rewarding the protagonist for her hard work. There's no specific character called 'donor' in this tale.
Step-by-step explanation:
In the story of Frau Holle, also known as Mother Hulda, there is no character specifically labeled as the 'donor'. However, the term 'donor' in a fairy tale context often refers to a character who provides the hero or protagonist with something valuable, such as an object, advice, or magical assistance. In Frau Holle, the character that most closely resembles this role is Frau Holle herself.
Frau Holle rewards the kind and hardworking protagonist with gold for her service, whereas her opposite, the lazy and unkind sister, receives a different kind of 'reward' that reflects her behavior. Thus, understanding the 'donor' in the context of this story requires interpreting the actions of Frau Holle.