I recently bought a huge buckskin mare with a wound on her head... She is 8 years old and I am trying to break her. However, I need to keep her wound clean and am unable to control her head... I have done exercises to try to teach her to lower her head and at first I was making progress, but now she is getting worse and worse. I am 5'2" and she is around 16 hands, maybe bigger, and around 1500 lbs. I can't afford a trainer but can do it myself if someone has a suggestion.