Janie,
I am in misery for you. I have also watched your posts to see how Georgie was progressing.
You did what you could do, I am sure you are in agony right now, and only time will help.
Don't make any decisions about future pets right now, let the dust settle and get through your mourning, and I mean all of it, for your friend, relative, everything.
You need to take care of yourself before you will be prepared to take care of an animal.
Meanwhile, I can't wait to get home to give my Sherman a hug, and appreciate him even more for the fact that I am fortunate enough not to be going through this. "But for the Grace of God go I.."