Since we don't know which Matthias Steiner this is, it's difficult to tell the story of his wife. However, generally speaking, if he is a public figure, his relationship with his wife might involve how they met, their shared experiences, and perhaps how his wife supports him in his career or personal life. But without more details, we can't really elaborate on it.
Sadly, without more context about Matthias Steiner, I cannot tell you the story about his wife. If he is a professional in a certain field, like a sportsman, his wife's story might be related to his career highs and lows. For example, if he had an injury, she might have played a role in his recovery. But again, this is all speculation without knowing who Matthias Steiner is.
The Steiner Christmas story could potentially be about the celebration of Christmas in a Steiner - inspired way. Steiner education often emphasizes nature and the spiritual side of things. So perhaps the story involves how nature participates in the Christmas celebration, like the animals being quiet on Christmas Eve as a sign of respect for the holy event. It could also include elements of how children in a Steiner school might prepare for Christmas, such as making natural decorations from things like pinecones and dried fruits.
Susie Steiner in the context of Fantastic Fiction could be a writer who has made contributions to the genre. Maybe she has written some really engaging stories that fall under the umbrella of Fantastic Fiction. It could be that her works have unique characters, interesting plotlines, or a distinct writing style that appeals to readers of this genre.
Fanfiction.net is also a good place to look for Nina and Matthias fanfiction. There are many different interpretations of their relationship in the stories there. Just search for their names in the search bar and you'll be presented with a list of relevant fanfictions.
There are quite a few Nina and Matthias fanfictions out there. 'Matthias's Change of Heart' is a popular one. It delves deep into how Matthias overcomes his prejudices towards Nina. Many fans like it because it stays true to the characters' personalities while adding new elements to their relationship. You can find these fanfictions on various fanfiction platforms like Archive of Our Own.
Again, assuming it's Rudolf Steiner, one key event was the founding of the Waldorf education system. This system has had a long - lasting impact on education around the world.
As I don't know the specific 'Steiner Christmas Story', I can't say for sure what the main characters are. It could have the traditional Christmas characters like Jesus, Mary, and Joseph if it's a Nativity - based story. Maybe it also has children as main characters if it focuses on how kids in a Steiner environment experience Christmas.
I'm not sure specifically which works Susie Steiner has in Fantastic Fiction. You could try looking her up on official book databases or literary websites.