Oh my goodness. I know just how you feel. I'm sure your nerves are shot and you're worried out of your mind. I know how expensive all of that is too.
What kind of antibiotics is she on? Is her breathing still labored? Are they considering a nebulizer? When Gigi was having difficulty breathing and it was very labored, we nebulized her with albuterol and it really helped a lot. The only problem is different vets have different opinions on using it, so we only used it when I felt like she was having a really hard time breathing. The rest of the time we nebulized her with distilled water.
I'm keeping y'all in my prayers. Hopefully she starts to recover quicker and she'll be home before you know it. Hang in there!!