After all these months of failing at getting Peaches halter broken, I succeeded today. And after all these months of trying, it only took my 30 minutes today. I put the rope halter on her, and let her loose. She went wild at first, galloping, bucking, tossing her head... And then she found out that it wasn't so fun when she stepped on the rope! Thirty minutes later, the light bulb in her little head turned on, and she figured out that the pressure on her face meant she needed to move her feet.
She now leads like a dream, and follows you like a happy puppy. Why did I never do this sooner!?