Thanks everyone for the kind words, and Jackie O is still doing it, but I still think its because of the harness as its the one that can slide. so is she pulls left or right the leash is allowed to move with it ~1in.
PETCO Black Single Ply Nylon Adjustable Dog Harnesses at PETCO I'm waiting for her to grow a little more to purchase the buddy belt. I will take up your advice and record it. We have a vet appt for tomorrow.