I know this happens and now it's happening to us. My daughter who has witnessed all the chaos all these years about her Twin Brother (difficult child) is now acting out. They are 15 years old. She has always had a good relationship with me. She is such a comfort to me. Helpful, funny, mostly in a good mood. She is the only one here that laughs. Her laugh is like music. Now she is silent and sullen. She is disappearing for hours at a time. She left Saturday to go to a friend's house around the corner and when I called at 6:30, the friend said "haven't seen her." None of her friends I contacted had seen her. She came back at 8:30 walking and by then I had called the police just to have a record in case I needed one later. I didn't yell at her. Her brother and I asked Where Were YOU?? She said Everywhere! When we asked more, she went out the back, into the alley and was gone again before her brother could catch her. Came back again silently at 10pm and locked herself in the room. The counselor came today and she refused to talk to her. My daughter is a homebody. Rarely goes anywhere. I always offer to get a friend and go somewhere. The counselor told me to give her space. I'm losing my daughter! She is furious about something but refuses to talk! difficult child walks to his friends' houses and goes to play basketball all weekend. He gave us a list of all his friends and their phone numbers. (nice!) What can I do? I leave her notes telling her I love her and we can talk it out whatever it is. Her brother doesn't know either. Thank you for your advice and support. It is invaluable to me.