Thank you all once again for your comforting words. The last thing she experienced is me and my mom petting her and telling her it was OK. She was purring and kneading in my lap when she drifted off to sleep after she got the sedative. It was a very peaceful experience. I already miss her so much, but I know that she is happily bounding over the rainbow bridge, free of confusion, stress and pain and for that, I am happy.