I got my nephew the Cricket for his first rifle.
The cocking knob isn't too hard that he can't do it himself, but I would have your daughter try it herself (withOUT a round in the chamber, obviously) before you buy it, if there is a way to do so without loosing the element of surprise.
The one I got came with fixed sights on it, and my nephew is a DARN good shot with it at 25 yards. I'm glad I went with a bolt action to teach him patience in making the shot count. I started having him shoot a side to side swinging target and because of his patience, he does pretty good at it.