The tooth fairy

So my five year old has started losing her teeth.I have no idea why we feel obligated to reward them for something so natural. The very idea of the magic fairy scares me. I wonder what else she secretly collects while we sleep. I’m not entirely sure when I first heard of this fairy but for some reason I can’t seem to recall her visiting my shoe or pillow! My daughter informs me that she collects all these teeth to build a castle. Just the thought of it turns my stomach. I’ve been considering telling her it’s all a hoax but it may not go down very well with her. So I guess our fairy services may go on for quite a while yet considering she has two younger sisters. We wouldn’t want to ruin the magic for them!