Update:
Hannah is home!! She's definitely not feeling like her normal self, but she's home, and resting comfortably. She is on a very strict regimen of IV fluids, oral medications and a very tiny amount of a gastro diet every 4-6 hours.
We are keeping our fingers crossed very tightly that this evening will go by smoothly and uneventfully, in which case, she will be returning to her good buddy Dr. Amat in the a.m. for further treatment. I sure don't want to go to the emergency room again tonight, so keep those good vibes coming that we'll make it through the night with no problems.
Thanks everyone for continuing to root for my girl. Her prognosis has improved greatly since I made the first post this afternoon.
Here are a few photos of Hannah. I think you can all tell how she feels about being sick by the first photo.