How can I protect my pregnant wife?

I currently have Covid and my pregnant wife (28F) refuses to distance from me. I’ve tried like hell to tell her to stay out of the bedroom where I’m laid up but she won’t. She’s in the camp of “Covid is just a cold.” If she won’t distance from me, is there any vitamins she could be taking to stay healthy?

As for me, this case seems mild and I’m hoping it doesn’t get worse. I’m on day 3. Day one was a dry feeling throat and ear ache. Day two was a very sore throat and terrible ear ache, so I went to urgent care to get tested and it was positive. Today, the sore throat is gone as well as the ear ache. I just feel tired and have a slight dry cough. Also worth noting I’m having trouble sleeping for some reason.