I think she looks great! The only thing would be she rocks back a little *too* much onto her hind end. Like in the second picture. It's really good that she uses her hind end, but you also want a balance in her front end. I think she would benefit a lot with gym lines so she keeps that rocking back, but also works her front end. Does that make sense?
Sometimes when they exaggerate it too much it hollows out their back, which you can kind of see in the last two pictures. Instead of that rock back, push off motion you want a nice arc.
For the leg problem, perhaps more no stirrup work? That helped me a ton (: