We have a flat top stove with a Ceran top. Ok, Filou walks over it all the time. And he never ever goes near anything that's too hot for him.
Of course I would not rely upon that. So I always leave a pot with water on after cooking.

Cats can take more heat than we - and they love warm food- but in ten years never ever anything happened. So I would monitor Marigold closely and always put something on the stove when it is hot-but I think she'll be ok.

P.S. After the infamous cat manners thread you will know that I am not appalled at the thought to share chicken soup with the cat When I'm cooking for guests however I make sure the cats are not in the kitchen at all