Hi and welcome to YT! Piper is just gorgeous!
As to the training...it may be that she associates a stern training voice (not that you're being too stern or anything) w/ something negative - perhaps her previous owner used negative reinforcement to train her...?
__________________ ~ A friend told me I was delusional. I nearly fell off my unicorn. ~ °¨¨¨°ºOº°¨¨¨° Ann | Pfeiffer | Marcel Verdel Purcell | Wylie | Artie °¨¨¨°ºOº°¨¨¨° |