Great, clear set up to the story with much promise of what is to come. The mind boggles at what Sarah’s mother is suggesting,but I still don’t think you need the mature tag; I’d be tempted to get rid of it and let more people read this.
Also, what is a ‘breathing store’? Some USism that I’m not aware of, of have I got the wrong end of the stick?
I think I jumped the gun just a bit on trying to describe the store (and I had run out of characters), but ‘breathing,’ was just my way of suggesting that the store was alive. Thanks for your comment!