Join Date: May 2009
Location: Winnipeg, Manitoba, Canada
Hmmm, have you tried a "join-up technique" with her? When we do joinup and the horse ignores the cue to slow and turn with the whip, we progress to jumping in front of them, hands up and yelling WHOA. I know you're going for a walk now, but it's a way to make her focus on you without having to resort to the whip just yet and get her listening to you.
Perhaps you could just forget the lunge for now, hopefully you have a round pen? Work on joinup with her. I'm sure she's likely not to understand at first since she'll just continue trotting even if your back is to her, but work moreso on disengaging her. Ask her to move forward, let her circle a few times, then MAKE her stop and turn. Continue asking for a change of direction almost constantly, if she's running past the whip, get out in front of her and MAKE her "whoa". This is where the use of the whip would also come in as Solon advised, escalate the force as neccesary until she's focused on YOU.
Lunging is very much a respect thing as a horse pretty much has to be verbal cue trained and have the respect for you to listen. I don't even use a whip with my mare on the lunge, because she's completely voice activated. However, my 2 year old doesn't quite understand lunging yet and is very much "WEEEE, RUNNING!" Doing joinup with her made her totally stop and realize she HAD to listen to me. I plan on doing it quite a bit more before advancing to lunge cues, but she's also learning her verbal cues from a lot of ground work with leading and such.
Again, when I say joinup, it CAN be completely modified to suit your purpose. For example, I can do joinup with my Arab mare and she won't walk into me because she's been trained not to from being lunged. I am fine with that, and much prefer it. When I did joinup with Jynx, she also didn't submit in a classical way (dropping her head) and wouldn't walk into me when I turned my back, but I wasn't aiming for perfect textbook "joinup", I was aiming for her focusing on me and listening to me which is exactly what I got.
I hope God tells her to smash her computer with a sledgehammer.