My heart dropped when I saw the thread title.
I don't even know what to say... I can't imagine how devastating this is to you right now.
All I know is that she has the best possible care possible and probably the best mommy in the world! She is very lucky to have you, and all the amazing medical staff you have around you. I just know you will do what is best/right by her.
I have no comforting words, I know nothing can make it easier, and I have no advice or experience, but I really am praying hard for Ellie. I hope it's something that can be fixed!