Dog still giving cause for concern. Off her food all weekend. Vet's appointment was set for Wednesday, but I phoned this morning and brought that forward. One chink of light in the darkness is she had something to eat this evening. Not much, but she went to her bowl and had some food (We've been leaving a little something there to tempt her). I put down some more and gave her some privacy, she also ate some of that. Not sure if she's feeling less nauseous or hunger is over coming the feeling of nausea. Hopefully the former. Now the wait to see if she keeps it down.