dlndavid:She is letting her son "fly", the question is; "how far?"
As far as they can go.
Having "limits", "rules" are necessary and fine.
IMHO freedom and a sense of self should be encouraged. Instead of "You Can't" maybe a yes you can-you need to do this or that, but, you can row across the bay, travel across the world, climb the mountain, ski by yourself, etc.