Hello & welcome, I am Dr. B, a licensed veterinarian and I would like to help you today. I do apologize that your question was not answered before. Different experts come online at various times; I just came online, read about your wee one’s situation, and wanted to help.
Again I do apologize that my colleagues could not aid you sooner, but can you tell me:
Does she still have a calf at foot? How old?
Has the weight loss continued despite feeding her on her own?
Any missing teeth, swellings, or sores in her mouth?
Any palpable swellings in the throat?
Any issues with eating hay or anything besides her grain?
Does her stool look looser or more voluminous then the other cows?