I can relate @
Blueberrybook. Both my kids took a while to learn but they did in the end.
I'm not sure if you did this, but I sent them to a driving school to learn the essentials and get some experience behind the wheel with someone who knows how to teach.
Driving with your child is a different kind of stress. Have faith that your daughter will figure it out, because she will, even if the journey is a little longer.
Like anything in parenting, it requires love, patience, and presence, all of which you're doing.