I know this has been done to death but I'm desperate for advice.
Since DD turned 7, we seem to be experiencing absolute rudeness straight out of Supernanny shows. Screaming/wailing tantrums at bedtime, lack of listening to instructions, rude behaviour (saying no to everything, pulling tongues at DH)
When we take away toys or deliver consequences it has zero effect, shouting gives me a sore throat, both DH and I are now arguing about what to do. I was nearly tempted to give her a smack to shock her but thankfully walked away.
Reward and praise helps but then few hours later it's back to demon daughter. She has started to hit her younger DS who behaves so much better and he is 2 years younger!
Any help for an exasperated stressed mum would be gratefully received 