I probably saw the movie on TV or VHS in Norway sometime between 1992 and 1998. The style was a lot like The Indian in the Cupboard and The Borrowers. Most likely a children's or teen movie.
I think this movie was about a child (I think it was a boy) that had befriended a female fairy. The only thing I can remember was a scene with the fairy crying inside a room because she had found a butterfly collection that either belonged to the child or someone in the family. I think the fairy used telekinetic like magic to send the butterfly collection into a fireplace or a stove and then set them on fire because she felt betrayed by the child and mourned the death of all the butterflies.
I think the child was locked outside the door trying to explain why the butterflies was killed and framed and desperately begged the fairy for forgiveness.