We know Alexis knows, but since she doesn't know we know that she knows, we're still playing along with the shenanigans. That's how this ended up happening.
What was supposed to happen was that Alexis would walk up to Santa and repeat that she wants a snowman snow globe that changes colors for the 240,302,657,302nd time (That's an approximation of the number of times she has mentioned that was what Santa should deliver. The margin of error is +/- 3.).
Easy. Done.
What actually happened was that Alexis walked up to the old man and said, "I want some Jonathon London books."
OK. Fine. Froggy books. We've known that she loves them. She reads them CONSTANTLY at school, but we haven't yet acquired a single one for her home library. That should be no big deal for Santa to add to the pile.
"Oh, and a XBox 360 too, please!"
She's screwing with us. I'm absolutely certain.