Originally Posted by greenlotus
...I wonder if she is ready for the busy work and organizational side.
... What can we do to get her ready?
Rather than focus on readiness for a particular AP subject, might you consider focusing on underlying life skills?
Such as Executive Function (EF) skills?
Organizational skills?
Time management skills?
Study skills?
Prioritizing?

As an example, this book addresses procrastination. It is newly listed as a resource, on the Davidson database.
Bust Your BUTS: Tips for Teens Who Procrastinate, by Joanne Foster Ed.D.

As another resource, Understood.org has articles and tips covering many of the life skills listed above.