Her hind legs look a little posty to me. Very straight through the hock. In some of the pics her shoulder angle looks great...in others, it looks pretty upright. I'm not sure why, but her pasterns, especially her rears, look long and spindly to me, but it's only in the one pic where she's actually standing mostly square (that third pic).
Overall, she's cute and looks to be very sensible. She could use to lose a few pounds, but once she's in shape, I bet she'll be quite a looker.
A note on stud chains: If you horse doesn't need it, don't use it. Take it off completely. Stud chains can be VERY harsh. If she were to stop on her lead with the stud chain on like that, she could do some serious damage. I've only known one horse who actually NEEDED a stud chain and he's an arab gelding that came from a show barn and is a bit insane.