I'm trying to brake a 10 year old mare of questionable origin. She is doing well, very smart and a quick learner, but she is strange in the way is follows people. Whenever a person or another horse in within seeing distance, she will turn and run to them as fast as she can then follow them around. I tried to make with work for me while teaching her turns and stuff, but she simply won't stop following them! I can't turn her away, no matter how hard I try. Is she just insecure or something? How do I make it stop? It's been going on for a while now and I'm about to loose it!