Critical but stable condition means that she is critical, meaning life threatening, but is holding her own, she is not getting any worse, but not any better either.
Unfortunately in end stage lung cancer, such as your Aunt's, she is not going to get better. I know that is hard to hear, but it is the truth.
I understand that you are not going down anymore. But is anyone with her? Is she alone? This can be a very frightening time for the dying patient.
