My son is making me crazy!!

[Guest guest]

My daughter, 12 and son, 10 (he has PDD-NOS) do not get along. Every day they fight, scream, yell. Now its getting physical, knock down drag out. My son likes to instigate the fighting and it makes my daughter REALLY angry, they just had yet another fight and he has horrible bruises all over his arms and on his back where she accosted him and bit him (he bit her first and she retaliated). Are there any sibling groups geared towards this kind of behavior. They have been to a child psychologist, whole lot of good it did but I think a group setting works better for them. I swear they hate each other, is there any hope for them coming to love each other. My daughter does want to be close to him but he makes it darn impossible because he thrives on irritating her. He does the same thing with our dog, he purposely gets her riled up to the point where she is growling and chases him. PLEASE!!! this is making me crazy, there is NO peace in my home when they are both here. My son is like this with everyone, how do I get him to calm downWindows Live Hotmail is giving away Zunes. Enter for your chance to win.