For the same reason people would rather eat yummy sugary or salty snacks over raw vegetables if that’s what they’re used to eating, cats will often reject anything that doesn’t taste/smell like “kitty crack” (kibble).
Because dry cat food is ultra-processed, dehydrated and pretty much devoid of any nutritional value, stuff has to be “added back” in during the manufacturing process - and the final touch is spraying the kibble nuggets with a “tasting spray” that is an artificial flavour enhancer, which entices them to eat food that is not really food.
@Zevida I would encourage you to pursue the wet-only route, but it will likely take a while to convince your kitty you’re not torturing her.
I just got two foster kittens in last week. I was told they had tried a variety of canned food but that they would only eat Friskies (Chef’s Dinner pate variety), and the rescue gave me a big bag of kibble. I asked if it would be ok if i tried to wean them off the kibble, they said sure. They were SUPER picky/disinterested about most of the wet food - until i stopped offering kibble. Lo and behold, it’s been 9 days and they will now eat ANY type of wet food i put in front of them. With gusto. One of them has also come around to bits of cooked chicken - which they both turned their noses up at when they first arrived (“sniff sniff… wtf is this…?”).
Bottom line - kibble = bad. Free feeding kibble = doubly bad.
So go with your gut, and start the transition to wet food. Maybe even throw in some freeze-dried raw or cooked meat here and there, too. Obligate carnivores are supposed to eat meat.