Sending many prayers your way. I'm glad she's home, especially if the vet claimed she wasn't drinking water there. At least she's more comfortable. Sounds like her sisters are trying to comfort her.
I pray for your little kitty, but regardless what happens you can at least feel a little better knowing that you did everything possible to keep her healthy. This is much, much more than many would do and is a very compassionate act. I have difficulty even thinking about one of my cats passing and know the helpless feeling that you have. You have done as much as can be done, now it is in God's hands. I wish you and your kitty the best and hope for a miracle.
I know, I worry sometimes that hanging on is more for me than her but I just feel if she's still alive there's still a chance. She seems to be in a lot of discomfort but is still getting up and walking around. She's not meowing or showing she is upset, just really heavy breathing. I hope they say the steroids are a good idea and help her. Still waiting to find out.
She was extremely excited to leave the vet. I can tell she is very happy to be home that's for sure.
You made the right decision. She needed to come home. She would be uncomfortable no matter where she is, so better at home where she is familiar and feeling loved and can walk around the house freely.