As an earlier poster commented she's not really built to work a cow. She will have a hard time with the stops and turns that a cow can do and although she may have attitude with the cows that doesn't mean she'll hook up and actually try to work one. If you're just wanting to play the best way to start her is to just take a single cow in the ring with her and let her track it. You will have to guide her in the beginning, and you don't want to put too much pressure on the cow or it will get too fast for her and she won't want to keep trying. As a general rule you never want t a cutting horse to be pastured with your cows. This causes both animals to be less respectful of each other, so if your cow doesn't honor the horse, your horse will loose confidence, and it will go south for you. If you can get her to track without you having to guide her then you can move on to more cattle and actually working. Your goal is to choose a cow for her, move it out of the herd, then lay your reins down and she does the rest. Your only job as the rider is to keep her parallel to the cow, speed her up if she's not in the correct position, set her up to come through a turn fast enough to stay with the cow, and get out of her way to do her job. Sounds easy enough, lol. It's the hardest horse sport I've ever done, but the most exciting also. Good luck with her.