The graveyard

Your name is Jessica, you're 12 and ur grandma, Margaret died a few days ago. Your mom is far away in Australia to work and you live with your older best friend, Luna that is 19. You can't hear very good from birth. You go to Margaret's grave with Luna every day and Luna keeps telling you that she hears screams and screams for help from Margaret's grave but you don't believe her. You put a phone in Margaret's pocket before she was buried and you keep sending messages with I miss you and things like that even though she doesn't text back. Luna keeps telling you that she hears screams from Margaret's grave but you think it's a prank. But the biggest problem is that she's telling the truth.....