DD1 is 5 going on 15...the kind of sass I mean is answering back, pulling faces when I'm talking to her seriously, deliberately not listening to me, that kind of low-level yet infuriating cheekiness. I'm trying to teach her respect but feel like it's not going in at all. So for example, today after her forgetting her pleases one time too many, I got down on her level to remind her of her manners and she starts pulling faces at me... 'Don't pullfaces when I'm talking to you...' [Pulls a different face] 'No, you're still pulling faces, look at me when I'm talking to you...' [turns head but closes eyes]... 'Say sorry' [barks SORRY!] 'No say it nicely...' [sorrrrrrry in whingey voice]. It drives me to distraction & I feel like getting nowhere with her (I must note it's only with me, at school butter wouldn't melt!). DH says I try to rationalise with her too much, that she should get 1 chance to be polite then time out - any thoughts?!!