DD knows, and she knows that we know she knows....IYKWIM.
She tried to challenge it last year, but scared herself into not doing it, just in case. And then she hung over my shoulder ( I was sitting on the floor at the time, after a couple of glasses of wine) and challenged Dh and I to know which one of us was Santa. Which of course, we scoffed at as she had JUST laid out her stocking for him, and how could we fill it.....while desperately trying to keep straight faces (and DD was laughing as well). Our present to her was already under the tree, look there it is wrapped and ready....
Anyway, this year, DH and herself have this sarcastic thing going on, and he keeps telling her that "If you don't believe, you won't receive". She wants a phone this year. So she's unwilling to completely challenge it, in case she doesn't get her phone. But its also a "we all know" thing going on with them....
DD is about to turn 13, and in 1st year in secondary school (is that Y7 equivalent?).
NEXT year, there will be 3 stockings out, and everyone will put something into everyone else's. So we will ALL be Santa's....