Last Fall my darling cat Tabitha became very old almost overnight. Her narrow shoulders sloped downward the way an old person’s would. When she sat down with me on the porch, where we could feel the sea breezes, she would circle around her soft bed and tuck her legs gently under her with perfect delicacy. I could almost feel the arthritic pain. I winced knowing that, I too, would someday be her age and, having been a runner for most of my life,  would also feel this pain. She moved so slowly, but with such a strong spirit. On April 28, she left this earth. I was with her at…