Hey, I got an idea, just wait till she goes in to estrus, strap on a set of horns, moo like you mean it, bring her a bushel of shelled corn and when you get close, slip the halter over her head.
Problem solved. Heck, you probably would never get away from her after that. Show a cow a good time and you can never get them to leave you alone.
The 'Bonker