I noticed that in the photo her arms are very bent and her elbows are sticking out which makes her duck her upper body down.
I meant that she should straighten her elbows a little, but not to ride with them absolutely straight. By straightening her elbows a little, her upper body would stay taller which would keep her elbows in, help create a straight line from elbow to bit and help keep her leg forward.
Arms should always be soft and move with the horse's head.
So sorry, I don't thinkI made it clear what I was saying.