Contact her obgyn immediately. They should have an answering service. If you're able to get through, tell them what's happening and that you've been to the .e.r and they have not helped. They will advise you further.
If you can't get ahold of anyone, take your wife back to the .e.r and demand for them to treat her. Tell them that you fear she is a danger to herself and her children. Refuse to leave until they do something.
Please keep us updated about her condition. Good luck.