I am so sorry to hear about your poor little one

You must just be going crazy as for what to do with her. I honestly have no advice, except to keep her hydrated since she is having so much of the "ugly d"

I would most DEFINITELY give her a syringe full of Pedialyte every hour, on the hour. I did this for for Tatum when she was sick with Coccidia, I just used the clear Pedialyte - she actually loved it. Also I would give her Nutri-Cal quite often if she is throwing up and isn't able to keep her food down.
I will be saying prayers for Kiwi - I sure do hope you have good news for us all soon