What posters above said.
I wish my now 2E (3E? ADD/dysgraphia) high school freshman had learned to keyboard much much earlier. We did not figure out the ADD until last summer. We suspected dysgraphia before that but I was sucked into the "he's just not trying" nonsense the teachers spouted.
I think it's a gift that's your DD's issue has been identified now.
Agree with Platypus that the "language wings" need to take her wherever she wants to go via keyboard, dictation, or whatever works!
And I LOVE that spaghetti's kid started a 2E support club!
Good luck!