Bulldog you are doing an excellent job, believe me troubleshooting calves can be overwhelming. Lots of posts now to read and remember, but at this point here is what I'd do: We must first agree she's a big calf with plenty of weight on her. Next I'd take a rectal temperature, if that's normal I'd stop feeding her all together. Nothing, no tubing, no electrolytes, nothing. This will allow her throat to heal, her stomach system to settle and hopefully kick her appetite into high gear. When she begins mooing like the world is coming to an end, she's hungry. No feedings for two days 48 hours or less, depending on results. I honest believe that her digestive tract is a disaster, bloat. This tactic may sound cruel, but may also save her life. Choices at this point are few. As always, free choice water and calf starter....Wish you luck...Topside
One last thing, how many pints of MR are you feeding her, per feeding?
Is her poop solid, liquid, pudding like, bloody, what color?
Her belly sure is big in the photos, looks bloated even two weeks ago.
Giving lots of pepto bismol may also do wonders during her fast.