I kept hoping that it was something else

I am so ,so sorry you have gone through this. I don't know what I would have done myself. I am praying so much that she can get this surgery and have a chance at life.
I know she is tiny but there are lots of Places that are experts in this surgery for tiny ones. You did the right thing and doing the right thing is often the most difficult to do.
Genie
Cookie
Lola
Angel