I’m not a cat person (by that I mean I have never owned a cat other than one we had when I was a kid and she was not really mine, just the family cat) so I’m not an expert on them by any means. But I remember learning, when I worked for a vet, that cats can get very specific about things like food shape. That’s why cat food companies make their foods in certain shapes, so that the cat will learn to like that shape and then be more difficult to change to another food. Now, this may or may not be true, but it’s what I was taught. For some reason I thought it was interesting enough to recall. I do know cats can be finicky enough that they will starve to death simply because they do not like what they are being fed. Dogs on the other hand WILL eat, eventually even if they are not crazy about what you are feeding them. The old saying is, no dog ever starved to death in front of a full bowl of food (unless of course they were sick).
Oh, one other thing we always tried with sick animals or ones that were refusing food that sometimes worked was warming the food a little. Sometimes it helped to get them to eat. (I don’t mean HOT of course, just warm).
Fascinating!
Of course, Meow Mix IS a mixture of specific shapes.
As for warming: she will eat tiny bits of raw venison, but ignore it if it is cooked.
She is too old to change, IMO and there is no way any human is going to do that for her.