My daughter who has ADHD and is 12 years old continues to be mean. It started when she was 2 yrs. old...taking kids toys...pushing, hitting, biting, hiding another child's favorite toy. Now at 12, she still has mean ways....she'll say something mean about someone she doesn't even know...she'll say, "Come Here" or yell "Where's my...." or has a very difficult time giving complements and will instead, say something hurtful. She is a beautiful, creative, talented young girl but we have to continually remind her to check her attitude, mind her manners, and say things nicely. She doesn't have any friends and spends all her time with us. We've had no luck with meds...any suggestions would be greatly appreciated.