Her pastern and hoof angle do not match...the pastern is more angled than the hoof. Now this could be due to needing more off the heel and toe, but if she's already a size 0 shoe, I'm not sure how much more you can take off.
Is she desperately weak in the pastern, though? No not yet...but the potential IS there; make for darn sure you always keep her feet in good condition...especially keep her toes from getting too long, as that is only going to add more strain on those pasterns.
"The ideal horseman has the courage of a lion, the patience of a saint, and the hands of a woman..."