My 10yr old DD is a nightmare - moody all the time, unresponsive, rude to me, her dad, other adults, bullies her two younger siblings. It doesn't help that she looks far older than her age and has already started her period. My husband and I are almost at the end of our tether, worrying if we've failed somewhere as parents. We've tried the naughty step, confiscating her tv/stereo/etc, grounding, but nothing seems to work. I even try and have one to one time which will work for the day but then she's back to her sullen self. Has anyone got any ideas, I'm desperate :-(