How old is your kitten? She may be afraid because she is young and not that confident. Cats and rabbits generally get along just fine. Not like as in buddies (there are some exceptions), but they tolerate and live together just fine. My 13 year old cat didn’t like it when my male rabbit Merlin approached her. He was unafraid. She allowed a few seconds of nose contact, and then gave him 3 or 4 super quick swipes with claws in She didn’t even touch him, just asked him to back up. She is more used to them now and tolerates them better, but doesn’t “like” them. I’d say your kitten is either playing – or afraid. And only you know her body language. If she is playing, well, she is out of luck. If she is afraid, she may relax about it as she grows up. Kittens are strange and whacky creatures. Sometimes it is impossible to figure out what is going on in their hairball brains. They are so dam funny though 🙂