Ok, so just going off this post, I think that maybe your liddle miss has got into a cycle of behaviour where she goes for the negative attention kwim?

I notice with my lot, across their ages, is if they feel they aren't getting enough attention, they go for the negative because they know (or feel) they are going to get it. You can't ignore a child teetering off the couch can you? It's a look at meee mum, look at meeeeeee!

I'm certainly not saying you don't give her enough because a) it's hard with 3 kids on your own b) some kids just neeeeeed more to fill them up and c) it can be hard to distribute you attention evenly - I mean if one is sick or TT'ing that takes up a little more from the rest.

So Miss 7 is the oldest? Can you put her 'in charge' of one or two things? Remind her she is the oldest and therefore gets to stay up 20 min later than the others etc? Compliment the hell out of her (over and above what you usually do) till she settles down just a bit.

Have mum and me time - to the exclusion of the other two (when in bed maybe?) Maybe share a hot choc and a girly goss? Help her find her place in the family as the oldest (the very first baby) and tell her stories of what a wonderful baby she was and how much you love her - really lay it on until she feels a little more secure.

For tonight. I'd leave her in her room (maybe chuck in a sandwich ) and too bad, so sad. She has been disobedient and you need to save your sanity a little. And the other 2 are watching...

XOXOXOXO