I'm an ex regular on this board and now have a mini-job teaching children (who happen to have Additional needs) instruments.
I think you need to go to lots of open days/exhibitions/training sessions and keep your options very much open. Get a sense of what her inner musical ear is like.... is she responsive to rhythm, pitch, timbre, tone...?
Perhaps leave guitar (fine motor skills) and I hesitate about recorder for the same reason (especially as nimble-fingered peers will also play it, and better) but keep your options open re violin. A good ear for pitch and the right hand technique is what really matters. The right hand technique is about a flexible right wrist and the right arm doing a back-and forth subtle figure 8 movement. The right hand fingers simply rest on the bow for some years. Kids with great fine motor skills try to do too much with the left hand too soon. Less nimble-fingered children who can hear pitch well can end up sounding better.... Ifthis sounds like her but she doesn't like the high sounds consider cello.
Keyboard sounds lovely - keyboard rather than piano I think...
For a child who is oral sensory seeking but has poor fine motor skills, I'd consider Trombone. You don't need any finger skills at all at any level. You do need to enjoy the physical feedback in your mouth though. You also need "sense of where you are in space" but, like the violin, teachers focus on producing long slow smooth tones on single notes for many months, so it's possible that if a child is ready you might "catch the wave" and actually improve that sense-of-where-you-are-in-space thing. It's also easier to produce the first notes than it is on a trumpet where you seem to need quite a lot of pressure and mouth control from the outset. Even better, you can buy pbone plastic trombones which can be dropped/bounced/carried easily by primary age children. My child, whose life story is set out on this board, is now a keen trombonist!