Sorry to hear about your kitty, expat. I've had Siamese cats most of my life and can't say enough good things about them. Porky, the one we put to rest with my son's R2-D2 towel was a Siamese. I hope Sushi gets a "second wind" and stays around to warm your hearts for a long, long while ahead.
"As a girl I had zero interest in the stove." - Julia Child
This is real inspiration. Look what Julia became!