She's cool!
You're right about the condition, it is good. That reins holder thing can break off, usually reins ribbon missing, having those perfect still is nice. Their paint can chip/scuff/rub easily, and yours looks perfect. Hair is uncut, looks total crimp like it should be (crimp not combed out) That she still lights up & no battery has leaked is also great. I might imagine that's an original ribbon?
The box is uncommon.
I think that (for some unknown reason) the light up star prance ones were the most common, but having the box sure isn't. It's missing the interior colored cardboard that holds her up/in, but it's still very cool. The presence of the box raises the value, but I don't know by how much.