A cat judges dinner first with her nose
Your cat's refusal of food straight from the fridge is mostly about smell, and smell is how she decides whether food is worth eating at all. Warmth does the opposite. Food at room temperature, roughly the temperature of small prey a cat would catch and of the meals her instincts are calibrated for, releases its full scent and announces itself as fresh. There is an evolutionary logic underneath the preference. In the wild, a cold carcass is an old carcass, and old meat carries risk; a cat who favored warm, freshly caught food avoided a great deal of trouble. Your kitchen version of that ancient rule is a cat who walks away from a perfectly good dinner because the fridge has silenced it.
Texture and comfort change in the cold too
Refrigeration does more than mute scent. Fats in wet food firm up when chilled, turning a soft, gravy-rich meal into a stiff, jelly-bound block that feels different on her tongue and takes longer to warm in her mouth. Some cats dislike the cold sensation itself, particularly older cats and those with sensitive teeth, for whom biting into fridge-cold food may be genuinely uncomfortable — a possibility worth raising with a veterinarian if a senior cat's reluctance is new or she drops food, paws at her mouth, or eats on one side. Texture preferences formed as a kitten also persist: a cat raised on room-temperature servings may treat the chilled version as a different, lesser food even when the tin is identical. None of this means she is being difficult. She is responding to real physical changes in the meal that you can reverse in a few minutes without altering what she is fed.
Warming her portion without cooking it
The simplest method is time: take the covered portion out of the fridge twenty to thirty minutes before her meal and let it stand on the counter, out of reach if she counter-surfs, until the chill is gone. Standing the sealed container or pouch in a bowl of warm water for a few minutes works equally well and keeps tap water out of the food for cats who object to dilution. If you use a microwave, heat for only a few seconds, stir thoroughly, and test with a fingertip, because microwaves create hot spots that can scald a cat's mouth even when the surface feels cool, and overheating also destroys the scent advantage you were trying to create. Never serve food that feels warm to your hand as more than lukewarm. Discard wet food that has sat out for more than a couple of hours rather than refrigerating and reserving it repeatedly, since each cycle of warming and chilling degrades it further.
Building the warm-up into the feeding routine
The preference only stops causing missed meals when the warm-up step becomes part of the routine rather than something remembered after she has already refused the bowl. If an opened tin lives in the fridge, keep portions pre-divided so the step takes seconds and nobody is tempted to scoop-and-serve cold to save time. Note whether she prefers food merely de-chilled or slightly warmed, because individual cats differ and the record stops each feeder experimenting from scratch. A sudden change matters more than the preference itself — a cat who once ate cold food happily and now refuses everything not warmed, or who refuses food at any temperature, needs a veterinary look. Add the early warm-up step to her meals in KinsLe through Care Teams, so the assigned feeder sees it as part of the task and her dinner always arrives smelling like dinner.