Usually they give the expression the photographer tell them to show; actions shots are usually a combination of photographer suggestion and model version of said same suggestion.
Veteran models -- this is been there, done that doing what they know works.
I don't think all profiles rule out personality..and I believe this youngster allowed her personality to show through.
Sometimes these youngsters, new to the craft, require much coaching. With experience, few need much if any coaching. They know what is
required and know very well what their most flattering poses are.