I have a young direct. Very brilliant. She is green, but I put her on a team to develop a planning document. The plan has been adopted, and now we are implementing it, but with modifications (at my direction, and that of my boss). She challenged me on why I am not following the plan as written. (multiple times). She seems to view any compromise as a failing. Her last comment was "Don't you think the committee that helped developed the plan should know it's not being followed?" ... and that was to my boss. Got the picture? It's more than a little outrageous. Feedback should have been immediate, but I'm a rookie at this and I can't think of something concise that doesn't sound biting. Should I bite?