That's not lying - it's engaging in the behavior that gets the desired result.
I agree. At this stage, I really feel that any communication is a good thing. She may not be able to articulate what she really wants, or the depth of her desire for it, but she has figured out another way to achieve her goal. That's wonderful, IMO.
So my response would be to help her articulate her desires more appropriately and respect them whenever possible. If she asks you to nurse but really wants to jump on the bed, perhaps you could say, "Oh, you want to jump? Why didn't you say so?" Reinforce that communicating your honest desires is the best way to achieve your goals, and then make sure that that is true.