My current problem: When we are walking and I ask her to whoa, she stops but wants to turn her hind instead of standing still. I think she is trying to look back at the house, but I need her to stay focused and stand still. Any tips for correcting this? I tried a little slap with the rope on the offending side and she ended up turning around the other way. She is sensitive and from what I understand gets overwhelmed easily. I use firm, but gentle, tones and when she gets overwhelmed we stop what we are doing and regroup and try again.