I don't think getting her into the blues is too lofty a goal. I think it would help her feel better over all. It sounds like the Flagyl is helping her even though it's hard on your furniture, but when she's feeling better she's eating better and should gain weight.
To bring her down into lower bg's we will need to get a little more aggressive with the dosing and testing.
So far we have 8 or 9 inches of snow, by dinner time we should have 16 inches, glad I don't have to go out.
BTW my internet has been on and off. My internet was down this morning until right before you posted. If you need something and I'm not online please call me.