"That's the moon,' I said.'Gran likes it like that,' said Lettie Hempstock.'But it was a crescent moon yesterday. And now it's full. And it was raining. It is raining. But now it's not.''Gran likes the full moon to shine on this side of the house. She says it's restful, and it reminds her of when she was a girl,' said Lettie. 'And you don't trip on the stairs."