Let me know how you’d like to proceed.
Kitty Thomas is known for dark romance and psychological fiction (e.g., The Game Maker series, Tender Mercies ). However, I don’t have a widely known piece by her specifically called “Comfort Food” in her major published catalog.
It sounds like you're looking for a specific written piece—likely a poem, short story, or essay—titled “Comfort Food” by an author named Kitty Thomas.