We used one with our son, but sparingly. It seemed to be more his choice than ours. He'd let us know when he wanted it (loudly) and the next thing you know it was gone and he was off to something else or sleep. We must have gone through a dozen.
In short, each kid is different. You and she will figure it out.
In short, each kid is different. You and she will figure it out.
Being told you're delusional does not necessarily mean you're mental.