She looks off on her front left, but it would be just the ground, it's very rough. I would not be lunging a horse in that round pen.
She doesn't really know how to lunge, she should not keep coming into the circle and then going out of the circle again. You need to really get on her when she comes into you like that. She has no form and no collection and needs tons of ground work.
Good luck with her. That 's great that you guys have improvment.