[The entirety of Nina's 21st century Christmas knowledge can probably be summed up with "was it in some kind of ancient Christmas special she might have seen/was it offhandedly mentioned by a Champion? Maybe she knows it.". (Tell her anything about Earth Christmas traditions and she'll probably believe it. What even is a missile toad?)]

Stars, I can never tell with kids' ages. The little boy is...a little over two, I think? And the girl is maybe one? [Surprisingly, she's right even if the nuance between a two year old versus a two and a half year old are lost on her.]

Anna just called him "Nicholas" so your guess is as good as mine. My personal research said he was... [She pauses, humming in thought with a playful smile.] Either raised by faeries, an otherwise normal human wood carver, or possibly a Viking.