Personally I would cull her. I worked for a guy that had a bunch of Hereford cows and Hereford Angus cross cows and we would have a couple of these every year as they got heavy in calf. Our vet said it is inheritable and it did run in certain cow families on that particular ranch. I wouldn't...
How are you making out?
If she still won't take him we used to run them in the chute and Inject her with some dope. Then we would use some lube and a bit of stock salt and rub it into the vagina. It would make a nice slim that we would then rub on the calf. We would give the cow enough dope...