Ditto to what aeh said.
I also wonder if the neuropsych evals didn't mention dysgraphia because they specifically mentioned the hand issue with different words. For instance, my dysgraphic ds had a diagnosis of "Disorder of Written Expression" from his first neuropsych, which essentially meant he has dysgraphia but the specific word dysgraphia wasn't mentioned in the report or in the follow-up parent interview. I found references to dysgraphia online after the follow-up appointment, and called back specifically to ask the neuropsych if he had dysgraphia and she said yes he does - but she specifically worded her report to fit both a psychiatric DSM manual diagnosis and also to match what the school system was expecting to see in the report. DS has had an IEP and 504 at school specifically to address the impact of his dysgraphia, but the word dysgraphia has never appeared in any of his IEP or 504 documentation.
I'm not a psychologist, so take what I have to say next with a huge grain of skeptical salt... but fwiw, I wonder if what your dd has is actually dysgraphia, or if it falls under a different diagnosis. The impact may be very similar, but also subtly different if the impaired handwriting ability is due to a physical challenge (per your reference to "hand defect") vs a neurological wiring issue, which is essentially what dysgraphia is. One of the impacts that might be different would be the lack of ability to develop automaticity which accompanies dysgraphia.
In any event, your dd most likely has a need for accommodations for handwriting at school, and the goal is to understand the extent of her need, as well as successfully advocating for accommodations and/or additional OT as needed. If you feel you are seeing things beyond simply handwriting challenges, I'd want to go for a broad eval as aeh suggested above. In either event, I wouldn't put a limiting description on what you're seeking as in looking for a dysgraphia diagnosis. Keep your focus on what you need to accomplish (understanding vs accommodations advocacy etc).
Hope that makes sense!
Best wishes,
polarbear
