She's having hepatic encephalopathy symptoms...I know it's hard to see her like this, but I'll do my best to help you.
Liver compromised dogs refuse food when the toxins have built up. Has she had a BM today?? This is extremely important. When was the last time she ate and how much?
Not only is adding water important, but it is important that you begin her on a feeding schedule so you can regulate the amount of protein that she gets at each meal.
Before I learned all of these things, I also free fed RC Hepatic
but once I learned about the water and importance of several small meals, it made a huge difference.