Bless your heart Barnbum. I know how hard it is to do what you had to today as I had to put down my sweet Lucky a few years back. It broke my heart but as I was crying my eyes out all of a sudden I felt this peacefullness come over me. It was then I knew he sent me a message that it was ok. I was not in the room when they put him down.
I know Suzy will live on forever in your hearts and she will be waiting for you at the rainbow bridge.