I need some help. I've got a january heifer calf that we can't get broke. She is tie broke but puts her head down and runs the other way when you try to lead her. we've tried leading her with a tractor and she trots along fine. she has spent hours for weeks tied up, we've rinsed her and blown her but she still puts her head down and throws it away and runs when you try to lead her. She's not wild and has never kicked. Any ideas would be greatly appreciated! ???