I am so sorry to hear this about Heather, I know it is a very had decision to make especially when they are still eating, when i had to make that decision mine had stopped eating for at least 2 days. But they went fast not lingering, Haven't had one like Heather. I think you just know in you heart when to say goodbye, no one can really tell you. You have done so much to try to help her, sometimes it's just not meant to be. please keep us updated.