4 yo dd (almost at the end of reception) has recently become a nightmare.
She's always had a temper but recently she's started hitting me and her dad, openly defiant (ask her not to do something, she does it repeatedly while laughing and shouting "you can't stop me"), deliberately hurting her little brother etc.
In the past time out has always worked but now she just hits and punches.
She was ok at school until recently she's started saying she doesn't like it and doesn't want to go but won't say why. I spoke to her teacher who said she's fine.
Any ideas???