Not at all. I personally think our culture has gone to the extreme with attachment parenting. And then is baffled why their DC doesn't know how to play on their own and is always attached to their parents or frustrated that they, the parents, don't have any private time to themselves.
I have no problem with 'trickery' as you put it. If it makes her stop and rethink her actions than great. My parents did the same with us as kids and though I figured out Santa and the Easter Bunny way before the normal age; I certainly did not resent the attempts of using it to keep my behavior in check.
