Affiliate Marketing Secrets

I’m writing a story for my little brother, and it’s about how a little girl looses her tooth. This is what I have so far, but I want to make it better:
Sarah ran the tip of her tongue across her teeth, all perfectly lined. She started playing with a tooth until she felt one gum fibre snap. She felt her tongue wiggle its way into a tiny niche under her tooth, where the surface was rough and scratchy. She knew she shouldn’t wiggle her tongue around that area, but couldn’t help it. Sarah had the desire to play with it more, until finally the tooth was hanging on one final, painful strand. “Oh god, please just stay in place,” She whispered to her reflection in the mirror. Frantically pushing the tooth into the gaping hole, where it once was held securely, Sarah hoped it would magically fix itself in place again. But as she did so, all of her precious teeth began to ache, and pulsate with strong pain.
Please help, and take care!=]