It's always sad to loose a friend. Specially one that is always there for you. A cat is always happy to see you, willing to share the happy and sad moments of your life. Willing to cuddle for hours or just happy with a little caresse.
They say cats that are loved never really die, they continue to watch over you, forever. You'll see Kimmie in a few months or whenever you are ready, Max will send you a new friend because one can not live without a cat.