I'm really getting to the end of the line with my two dd's aged 8 and 6. They are so well behaved when they're apart but when they're together, and they usually are. Life is hell. They fight, scream, cry, wail, kick doors and throw things at each other. They cannot play nicely for more than a minute before it turns into this. If they're not fighting they join up and be disrespectful to me or any other adult in charge, like when someone is on the phone they will both make as much noise as possible so they can't speak and then giggle with each other feeling really happy with themselves. They never do as they're told. I feel like I'm going to crack up. It's got the the point where, and I know how terrible it sounds, I don't want to come home. Finally asking for advice now after a horrendous morning being terrorised by them and breaking up several fights. They were such good kids till about a year ago....