All right, EVERYBODY needs sleep, but children especially so.
My 3yo niece arrived this morning and she was not her usual self, even for the recent change in her reverting to more baby-like behaviours. Her mood was almost palpable, the expression on her face blank, yet somehow negative. In between her moments like that, she was fussing at her Dad's helping her get her boots off. She usually likes to do the rest by herself but she wasn't moving, so Dad asked her if she wanted help. She just stood there, dark circles under her eyes. He then said he had to go, at which point she started lightly hitting him, but not in her usual "I'm hitting you because I want to see your reaction", but because she was unhappy. He kept asking her questions, trying to have her verbalize what she wanted, to no avail. She ended up in a mini tantrum, jumping up and down, a kind of scream coming out of her mouth. She was not a happy kid.
Eventually, Dad just picked her up, hugged her, then I said, "Come with me," and she did. I took her coat off and while doing so, quietly and gently asked her if she wanted to sleep on me. She nodded her head. Downstairs we went to the computer where I got her to sleep while I did stuff. At one point, I put her in my bed. She slept about an hour in all, I think. Completely different child upon waking!