Jeeps,
I read this site all the time but never have responded. I hope I am doing this right. But I had to respond to your post. I worked in a hospital in the administrative office for 26 years and would strongly recommed you call the hospital your wife was at and request a copy of her medical records. Then have another physician or malpractice lawyer review them. Because if your wife indeed had food poisoning, that restaurant needs to know asap. The next person who eats their meat might not be as lucky as your wife. Again, it is her right to request and get a copy of her medical record.
Good luck, J