I've just spotted your thread in the intros forum. I just wanted to say that it sounds like you've been going through what we went through for many years. My daughter never ever did a thing she was asked, I mean nothing, and no punishment or reward system had any effect (although she's always had a lovely nature, at the same time). But, my daughter is no longer the handful she was. Just last October, a few weeks before her 7th birthday (we were on holiday, so I can pinpoint the date) she had a huge turn around. She's now a lovely young lady, most of the time. Honestly, I'm still in shock. She seemed to mature overnight. She's not perfect and there are still major issues with her concentration, more than anything else, but it's nothing like it was.
It sounds like your daughter's coming on well too. That's great and I really hope it continues.
Anyway, this forum is great for bouncing ideas of one another, as some Mums are more experienced than others. Welcome!
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"We act as though comfort and luxury were the chief requirements of life, when all we need to make us really happy is something to be enthusiatic about." Charles Kingsley