My Best Friend is a Cloud

I understand this sounds unusual, but my best friend is a cloud. She follows me home from school each afternoon. She always appears in roughly the same shape — something like a rabbit with exceptionally fluffy ears. When I am sad, she rains a little, just on me, which may sound unpleasant but actually feels rather like a hug. When I am happy, she turns a brilliant white and puffs herself up, which I believe is her version of smiling....