question

[tb]

I have three spring born heifers that I am trying to halter break I can get one heifer out at a time of the pen when i try to go down the road i pretty have to pull her but when i turn around to head towards the barn i have to hold the heifer back do I need to just tie them up longer or what if i have my daughter walk behind them they do ok I really cant separate them let me know what I am doing wrong