Overall fit looks good, but I agree, move it back away from her shoulders! That's probably the majority of your problem, her shoulders are hitting the bars of the saddle, causing her to take shorter strides, dropping her back into a concave posture, and having her weight on the forehand. However, when you do move it back, it will be downhill, so you will need to shim it otherwise it will dump your weight onto her forehand and create pressure. Have you looked into getting the Theraflex pad? I never ride a horse without one!!