Jon, her physical body may be gone but her spirit and love live in your heart. You provided her with a wonderful life. Be happy, my friend.
Peace to little Rosie, and you too, remembering her. I sort of imagine her being debriefed by Hobbes, who would want to know how Jondude is.
Jon, you will always love her and now that she has crossed the rainbow bridge, she will never hurt again. I am sending you loving thoughts and comfort.
What a lovely memorial you have for your beautiful Rosie. As hard as it was, you did all you could do for your feline friend. In the end, you did the right thing. I am so sorry for your loss.