Hope she feels better. A dose of an IV bag does a lot of wonders.
I used to take all my Danes home with an IV running.
I bought an old metal standing bird cage to hang the IV's on. Worked great and you could pick it up and take it outside for bathroom breaks. And they could get up and down without pulling on the line.
Also that handle your husband is holding on to in the car? Get a bungee cord and hook it on the handle and the other end to the IV bag. Gives you a break to sit more comfortably and more room to move around and hold the dog. Keeps it up and prevents the line from kinking. Many of my Danes came home in the van that way.
Again I hope she gets better you folks have done SO much for these little dogs. And to matter what crisis they are having to overcome they always look so happy in your pictures. They are VERY lucky dogs to have you as owners. :C