Maybe she just doesn't want help. In that case, you cannot help her. Does she have any symptoms that interfere with her daily life? If not then maybe it has gotten milder as she has aged. I've heard of people with ADHD who have gotten better as they got older so it's possible. In that it's "gotten better" what I mean is that they still have ADD but they learned to manage it better so it's not affecting them anymore. Maybe that's what your friend is dealing with. She knows how to manage it better now.