After a couple weeks of tying up the cow, restraining her in the squeeze chute and doing everything we could to get her to accept Jake, we finally gave up.
She just didn't want to be a foster mother. When she jumped over the gate and ran to the field, that was the last straw.
As for Jake?
He's happy to be rid of her!! At least when he gets a bottle, he doesn't get kicked in the chin like he did with the cow! :/