Mutton withers and a bit long in the back. Upright shoulder and a neck that is set a bit low. Nice angle from Point of shoulder to elbow. Lots of bone, seems correct angles in her back leg but has a steep croup.
I really don't like to give a conformation critique on young horses. They haven't finished growing and won't until 5-6ish and from now until then their bodies change so much and will go through wonky/ugly phases before really coming into itself. You can't just say that your horse has these things when it still have 3ish years to finish growing and settling into herself. Like right now, she's a tad butt high and a few other small things but she is just going to continue to go through those weird ugly stages.