Well, Dusty Rose is as good as gold with a baby on her, or small children or adults who don't know how to ride, or handicapped. Put a good rider on her and she's liable to shy right out from under you. Or if you insist that she do what you want, she'll crow hop a couple of times. After watching her for ten years, it's obvious to me that she does it for the h*ll of it, not because she spooks, etc.
It sounds like she sizes up a persons abilities and capabilities and adjusts accordingly.:’)