I'm sorry to hear that. I know I didn't participate in the thread previously, but after reading all of it I just want you to know that it sounds like you did everything in your power to help her. Try not to feel guilty, and I hope that your day gets better.
Thanks guys. We will miss her a lot. And to make things a little worse, her cagemate inexplicably died yesterday. She showed no symptoms at all. We are selling our rat supplies. This has been far too traumatizing.