Abilify can be used for nine year old children, usually those who have been diagnosed with bipolar disorder and/or ADD. It is safe to combine with Prozac. Have you noticed any improvement in your daughter's symptoms on these medications? If not, I would suggest discussing it further with her psychiatrist and perhaps specifically mentioning the symptoms that continue to be problematic for her (and/or for your family).
Also, finding a good child psychologist who can work with your daughter would probably be very helpful. Oftentimes issues of anger management and anxiety (especially) are very responsive to psychotherapy.