My good friend has suffered a mental breakdown caused entirely by the inexplicable bad behaviour of her 10yo DD. This child behaves perfectly well in school and when at friends houses (including mine) but is an absolute nightmare at home. She has always been badly behaved but as she gets older, it's become worse. Her parents have tried all the normal tactics to try to get to the bottom of it and have also implemented various punishments but absolutely nothing works. Her DD is physically and verbally violent with every family member. She hits, swears, shouts, lies, steals and wets herself purely for spite. They are just a regular family, mum, dad and older sister. It's not like she's doing it for attention as she gets all the attention anyway. Her older sister who is 12, is the complete opposite to her in every respect. My friend is at a loss as to where to go for help and has started smoking to help her get through the stress of each day. Has anyone else been through similar circumstances and where did you go for help? Thank you.