The child is little. Her connective tissue is soft, she is not very co-ordinated, and she has many other life tasks to master. Leave her music training to a trained teacher and don't make more demands on her for a long time.

For the record, I know a tenured professor of violin/viola who can fiddle with the best of them. I believe that the main thing that makes a fiddler is having the interest and hearing lots of examples. One listen is worth 100 discussions.