Your granddaughter is the perfect age for this. Kids who start that young , with the advanced tec training nowadays, will be pros by the time they hit mid teens to 20s.
I played backup to old time fiddle music in the competitions every year in Weiser, Idaho, for some time. Played four nights a week in a band in FLA. The violinist, classically trained, was superb. I learned his contest tunes, and played guitar as his backup on stage. After winning 3rd in the country, then second, he was asked to be one of the judges.
He trained me to tune my guitar without aid of a fork or electric tuner. People would put their tuners against him and he would read right on every time.
Being such a tactical seamless team with other musicians , knowing every glance and note, is a privilege beyond description.
What will be entirely inspiring for your girl , is to take her to see the old time fiddle competitions . There are a number of them in different states. The pros, and other kids, are always kind and helpful. She will be inspired.
Out here, is not that easy to find those events. Unfortunately.
On the other hand, planning to attend Weiser , the third week in June, is a driveable plan . And worth every mile. I would say, get online and see if there is a program schedule of events for then. It is a week long event. People mingle with other bands, other styles, even at night in the campground there, and have a blast. I've met and played with among the best folks in the country and Canada at that place.
All my best for her. Music of that caliber is a fantastic life goal. She can be in the orchestra, too, if she takes classical lessons and learns to read music.
Most of all, have FUN.