brainstorms: everything and nothing

Sophie´s behavior lately, I hope, is just due to her figuring out life, a brainstorm of activity, and this is her way of sorting out everything. She´s taken to saying she wants one thing, then the opposite with no possibility of pleasing her. She sets us up to fail. The other day in the car, she was crying for us to go and stop. GOOOOO!!, she´d plea, catch a breath of air, then continue, STOOOOOP!!!!. This would alternate until she gave up in exhaustion. This morning she said, "Mommy, I love you. Tell me you don´t love me. Huh??? No, I won´t. That´s wack.