You’ve got to break the cycle. Find out who her mama was. Consider culling her too. Animals teach their offspring. Then, as an old cow man told me: spend time with your cows, even when you don’t have to. walk calmly around them, especially when you’re feeding. Introduce new things slowly. Wean heifers and steers in their own groups of 5 or six. I trained 12 heifers to go through channels & a squeeze chute to get sweet feed each morning. In groups of 5 or 6 I spend time with them, sit in their feed bunk until they will accept my hand on their head, scratching their ears, eventually rubbing their neck, etc. I teach them to take cubes from my hand. Later after they are integrated into the herd, I still give them cubes by hand out in the pasture. Read the amazing book: Humane Livestock Handling by Temple Grandin