oooh, you have a tough row to hoe with this one only because Mom just may be the problem. I have had alot of kids like this, as soon as parents come they start to ignore your authority and start the show, ooooh Mom thinks its so cute. spare me! The one thing I know is when I am done with them they are like two dif little personalities, as soon as they come through the door the game is over. They learn I've got their number and they fly right for the next 9 hrs. But as soon as Mom or Dad comes through the door, my efforts are done. I just step back and watch them morf back into a terror. If the parent ever asks "do they do this with you all day?" I just respond to them "not with me, they know better!" I have been spit on in front of a parent and the parent just laughed.