Re: The Christmas Trees
"I've seen Santa, of course he's real," the Pixie says. "He shows up in the parade, every year. But I never saw Christmas Elves in the city before, not a one. Not a real one, anyway. Lots of toys. This is something new. I wonder what they are up to."
I'm going to start a new thread, skipping over the time, and allowing the characters to regroup. The new thread is, "At the Stock Exchange"
It's a short time-hop into the future, because while these characters were investigating the Pixies here, the others back at library have found out more about these "Christmas Elves". They are Nisse, traditional Norwegian creatures.
What's more, whatever the Nisse are up to has some serious consequences, connected to the disappearance of an important Norwegian Troll.
Further, the group at the library has got a good idea of where the Nisse will make their next appearance: the tree at the New York Stock Exchange. So they will set a night watch over it, and wait.
The events of "At the Stock Exchange" will assume that characters have been watching over the area, ready to spot the strange little Nisse and catch one, and find out at last what is going on.
This is not mandatory! The library is not that kind of organization. They can only ask for help and hope. If you want to be somewhere else, let me know.