Is my grandmother going to eat my kitties!?

Okay, so ever since me and my family and our cats moved in with my grandmother who's 67, she's been saying weird stuff to my cats. Like, whenever she walks down the hallway and she sees one of (out of 3) cats, she says, "Kitty cats for breakfast". And this can go on for like...a couple of minutes. And my cats just stare up at her with this freaked out look on their faces. It's sorta freaky..idk why she says it. And i think she hates my cats...because we moved in with her and she has three dogs. We have three cats and we're gradually letting them warm up to eachother. But i think my grandmother has something against our cats. She says it in a sort of playfull, weird creepy way. Like, "Kitty kats for brekfeesssssst >:D" And i look at her and im like...um, hi gramma. So yeah. It's kinda strange and i really don't want to come home one day and find that she's killed my kitties and chopped them up into a stew for her breakfast. Why is she saying this xD