Better pictures would help - full body, untacked and not from a side angle. As well as straight on pictures of the front and hind legs.
From what I see in these though, I wouldn't necessarily qualify her breeding quality. She's not a train wreck by any means though. She looks like she might be a touch sickle hocked, kinda shark fin withers and a big blocky head. (I personally don't mind big heads, but in general people tend to want to avoid them for the most part.) And her rump just looks a bit weird. Not enough hip? Can't quite put my finger on it.