Understanding the reason behind the mean behavior of a child is the practical solution to the problem. Disciplining a child without understanding the core issue is meaningless. In this case, the school counselor could help to figure out and make others understand why your daughter was mean to her peer. People don’t consider ADHD as a serious problem and thus undermine struggles of a ADHD kid. An understanding counselor can help clearing all the misunderstandings between you and the school.