We had a recent thread about “theory of mind”: “understanding other people do not have the same knowledge you do,” which is something that small children sometimes do not get. I wonder if that’s relevant here.
We, the viewers, know that Snow White is not dead, but none of the characters in the movie knows this. (As far as I can remember. I might be wrong about either or both of these claims; or Snow White might actually be dead, and the kiss resurrects her—it’s been a long time since I’ve seen the film.)