That is an amazing story and certainly speaks to your commitment to the welfare of your cats. You have done the best possible thing for her to have gotten her to medical help. Imagine how much better she feels with whatever intervention they have done even if it will not be enough to save her life. She is comfortable and not struggling to make it on the streets, especially if she was not able to eat. I agree with you in wanting the whole story for the sake of the rest of the colony, and also to get to the bottom of whatever has happened to this cat that you have tried so hard to help.